Finding the Fourth Proportional to 521,057.97, 718,831.71 and 306,101.07
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Solution
The fourth proportional to 521,057.97, 718,831.71 and 306,101.07 is: 422,285.37
Step by Step Solution
- Step 1: Write the proportion equation
521,057.97 : 718,831.71 = 306,101.07 : x - Step 2: Convert to fraction form
521,057.97/718,831.71 = 306,101.07/x - Step 3: Cross multiply
521,057.97x = 718,831.71 × 306,101.07 - Step 4: Simplify right side
521,057.97x = 220,035,155,580.93 - Step 5: Solve for x
x = 220,035,155,580.93/521,057.97 - Step 6: Final answer
x = 422,285.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.