Finding the Fourth Proportional to 394,905.24, 592,357.34 and 128,665.31
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Solution
The fourth proportional to 394,905.24, 592,357.34 and 128,665.31 is: 192,997.79
Step by Step Solution
- Step 1: Write the proportion equation
394,905.24 : 592,357.34 = 128,665.31 : x - Step 2: Convert to fraction form
394,905.24/592,357.34 = 128,665.31/x - Step 3: Cross multiply
394,905.24x = 592,357.34 × 128,665.31 - Step 4: Simplify right side
394,905.24x = 76,215,838,141.75 - Step 5: Solve for x
x = 76,215,838,141.75/394,905.24 - Step 6: Final answer
x = 192,997.79
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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.