312.75 is what percent of 278 - 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 278 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 278, so we can write it down as 100%=278.
4. We know, that x% equals 312.75 of the output value, so we can write it down as x%=312.75.
5. Now we have two simple equations:
1) 100%=278
2) x%=312.75
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%=278/312.75
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 312.75 is what percent of 278

100%/x%=278/312.75
(100/x)*x=(278/312.75)*x       - we multiply both sides of the equation by x
100=0.88888888888889*x       - we divide both sides of the equation by (0.88888888888889) to get x
100/0.88888888888889=x
112.5=x
x=112.5

now we have:
312.75 is 112.5% of 278