Finding the Fourth Proportional to 485,387.30, 728,102.79 and 185,790.17
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Solution
The fourth proportional to 485,387.30, 728,102.79 and 185,790.17 is: 278,693.61
Step by Step Solution
- Step 1: Write the proportion equation
485,387.30 : 728,102.79 = 185,790.17 : x - Step 2: Convert to fraction form
485,387.30/728,102.79 = 185,790.17/x - Step 3: Cross multiply
485,387.30x = 728,102.79 × 185,790.17 - Step 4: Simplify right side
485,387.30x = 135,274,337,491.06 - Step 5: Solve for x
x = 135,274,337,491.06/485,387.30 - Step 6: Final answer
x = 278,693.61
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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.