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Finding the Fourth Proportional to 392,147.46, 587,934.45 and 125,756.34

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Solution

The fourth proportional to 392,147.46, 587,934.45 and 125,756.34 is: 188,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,147.46 : 587,934.45 = 125,756.34 : x
  2. Step 2: Convert to fraction form
    392,147.46/587,934.45 = 125,756.34/x
  3. Step 3: Cross multiply
    392,147.46x = 587,934.45 × 125,756.34
  4. Step 4: Simplify right side
    392,147.46x = 73,936,484,591.91
  5. Step 5: Solve for x
    x = 73,936,484,591.91/392,147.46
  6. Step 6: Final answer
    x = 188,542.56

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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.