34.2 is what percent of 420.3 - 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 420.3 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 420.3, so we can write it down as 100%=420.3.
4. We know, that x% equals 34.2 of the output value, so we can write it down as x%=34.2.
5. Now we have two simple equations:
1) 100%=420.3
2) x%=34.2
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%=420.3/34.2
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 34.2 is what percent of 420.3

100%/x%=420.3/34.2
(100/x)*x=(420.3/34.2)*x       - we multiply both sides of the equation by x
100=12.289473684211*x       - we divide both sides of the equation by (12.289473684211) to get x
100/12.289473684211=x
8.1370449678801=x
x=8.1370449678801

now we have:
34.2 is 8.1370449678801% of 420.3