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Finding the Fourth Proportional to 392,320.26, 587,737.62 and 231,915.96

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Solution

The fourth proportional to 392,320.26, 587,737.62 and 231,915.96 is: 347,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,320.26 : 587,737.62 = 231,915.96 : x
  2. Step 2: Convert to fraction form
    392,320.26/587,737.62 = 231,915.96/x
  3. Step 3: Cross multiply
    392,320.26x = 587,737.62 × 231,915.96
  4. Step 4: Simplify right side
    392,320.26x = 136,305,734,370.42
  5. Step 5: Solve for x
    x = 136,305,734,370.42/392,320.26
  6. Step 6: Final answer
    x = 347,434.86

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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.