Finding the Fourth Proportional to 387,728.74, 581,686.26 and 134,972.02
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Solution
The fourth proportional to 387,728.74, 581,686.26 and 134,972.02 is: 202,490.46
Step by Step Solution
- Step 1: Write the proportion equation
387,728.74 : 581,686.26 = 134,972.02 : x - Step 2: Convert to fraction form
387,728.74/581,686.26 = 134,972.02/x - Step 3: Cross multiply
387,728.74x = 581,686.26 × 134,972.02 - Step 4: Simplify right side
387,728.74x = 78,511,369,518.45 - Step 5: Solve for x
x = 78,511,369,518.45/387,728.74 - Step 6: Final answer
x = 202,490.46
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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.