Finding the Fourth Proportional to 391,612.20, 587,418.75 and 107,305.17
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Solution
The fourth proportional to 391,612.20, 587,418.75 and 107,305.17 is: 160,957.88
Step by Step Solution
- Step 1: Write the proportion equation
391,612.20 : 587,418.75 = 107,305.17 : x - Step 2: Convert to fraction form
391,612.20/587,418.75 = 107,305.17/x - Step 3: Cross multiply
391,612.20x = 587,418.75 × 107,305.17 - Step 4: Simplify right side
391,612.20x = 63,033,068,829.94 - Step 5: Solve for x
x = 63,033,068,829.94/391,612.20 - Step 6: Final answer
x = 160,957.88
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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.