Finding the Fourth Proportional to 399,305.12, 598,757.88 and 132,972.80
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Solution
The fourth proportional to 399,305.12, 598,757.88 and 132,972.80 is: 199,392.66
Step by Step Solution
- Step 1: Write the proportion equation
399,305.12 : 598,757.88 = 132,972.80 : x - Step 2: Convert to fraction form
399,305.12/598,757.88 = 132,972.80/x - Step 3: Cross multiply
399,305.12x = 598,757.88 × 132,972.80 - Step 4: Simplify right side
399,305.12x = 79,618,511,825.66 - Step 5: Solve for x
x = 79,618,511,825.66/399,305.12 - Step 6: Final answer
x = 199,392.66
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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.