Finding the Fourth Proportional to 288,755.15, 433,125.36 and 78,387.62
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Solution
The fourth proportional to 288,755.15, 433,125.36 and 78,387.62 is: 117,579.43
Step by Step Solution
- Step 1: Write the proportion equation
288,755.15 : 433,125.36 = 78,387.62 : x - Step 2: Convert to fraction form
288,755.15/433,125.36 = 78,387.62/x - Step 3: Cross multiply
288,755.15x = 433,125.36 × 78,387.62 - Step 4: Simplify right side
288,755.15x = 33,951,663,966.42 - Step 5: Solve for x
x = 33,951,663,966.42/288,755.15 - Step 6: Final answer
x = 117,579.43
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1.5x scale
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.