4.2 is what percent of 255000000 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 255000000 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 255000000, so we can write it down as 100%=255000000.
4. We know, that x% equals 4.2 of the output value, so we can write it down as x%=4.2.
5. Now we have two simple equations:
1) 100%=255000000
2) x%=4.2
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=255000000/4.2
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 4.2 is what percent of 255000000

100%/x%=255000000/4.2
(100/x)*x=(255000000/4.2)*x       - we multiply both sides of the equation by x
100=60714285.714286*x       - we divide both sides of the equation by (60714285.714286) to get x
100/60714285.714286=x
1.6470588235294E-6=x
x=1.6470588235294E-6

now we have:
4.2 is 1.6470588235294E-6% of 255000000