Finding the Fourth Proportional to 422,757.18, 634,134.42 and 107,213.31
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Solution
The fourth proportional to 422,757.18, 634,134.42 and 107,213.31 is: 160,819.62
Step by Step Solution
- Step 1: Write the proportion equation
422,757.18 : 634,134.42 = 107,213.31 : x - Step 2: Convert to fraction form
422,757.18/634,134.42 = 107,213.31/x - Step 3: Cross multiply
422,757.18x = 634,134.42 × 107,213.31 - Step 4: Simplify right side
422,757.18x = 67,987,650,153.13 - Step 5: Solve for x
x = 67,987,650,153.13/422,757.18 - Step 6: Final answer
x = 160,819.62
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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.