Finding the Fourth Proportional to 394,115.72, 543,684.84 and 232,892.78
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Solution
The fourth proportional to 394,115.72, 543,684.84 and 232,892.78 is: 321,276.89
Step by Step Solution
- Step 1: Write the proportion equation
394,115.72 : 543,684.84 = 232,892.78 : x - Step 2: Convert to fraction form
394,115.72/543,684.84 = 232,892.78/x - Step 3: Cross multiply
394,115.72x = 543,684.84 × 232,892.78 - Step 4: Simplify right side
394,115.72x = 126,620,273,831.46 - Step 5: Solve for x
x = 126,620,273,831.46/394,115.72 - Step 6: Final answer
x = 321,276.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.