351.21 is what percent of 1390.21 - 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 1390.21 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 1390.21, so we can write it down as 100%=1390.21.
4. We know, that x% equals 351.21 of the output value, so we can write it down as x%=351.21.
5. Now we have two simple equations:
1) 100%=1390.21
2) x%=351.21
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%=1390.21/351.21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 351.21 is what percent of 1390.21

100%/x%=1390.21/351.21
(100/x)*x=(1390.21/351.21)*x       - we multiply both sides of the equation by x
100=3.9583440107058*x       - we divide both sides of the equation by (3.9583440107058) to get x
100/3.9583440107058=x
25.263089749031=x
x=25.263089749031

now we have:
351.21 is 25.263089749031% of 1390.21