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Finding the Fourth Proportional to 395,794.72, 593,634.66 and 129,565.78

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Solution

The fourth proportional to 395,794.72, 593,634.66 and 129,565.78 is: 194,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,794.72 : 593,634.66 = 129,565.78 : x
  2. Step 2: Convert to fraction form
    395,794.72/593,634.66 = 129,565.78/x
  3. Step 3: Cross multiply
    395,794.72x = 593,634.66 × 129,565.78
  4. Step 4: Simplify right side
    395,794.72x = 76,914,737,757.93
  5. Step 5: Solve for x
    x = 76,914,737,757.93/395,794.72
  6. Step 6: Final answer
    x = 194,329.87

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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.