Finding the Fourth Proportional to 398,755.68, 598,165.92 and 118,272.12
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Solution
The fourth proportional to 398,755.68, 598,165.92 and 118,272.12 is: 177,417.79
Step by Step Solution
- Step 1: Write the proportion equation
398,755.68 : 598,165.92 = 118,272.12 : x - Step 2: Convert to fraction form
398,755.68/598,165.92 = 118,272.12/x - Step 3: Cross multiply
398,755.68x = 598,165.92 × 118,272.12 - Step 4: Simplify right side
398,755.68x = 70,746,351,470.15 - Step 5: Solve for x
x = 70,746,351,470.15/398,755.68 - Step 6: Final answer
x = 177,417.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.