Home / 412,834.20-619,251.30-132,379.80

Finding the Fourth Proportional to 412,834.20, 619,251.30 and 132,379.80

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Solution

The fourth proportional to 412,834.20, 619,251.30 and 132,379.80 is: 198,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,834.20 : 619,251.30 = 132,379.80 : x
  2. Step 2: Convert to fraction form
    412,834.20/619,251.30 = 132,379.80/x
  3. Step 3: Cross multiply
    412,834.20x = 619,251.30 × 132,379.80
  4. Step 4: Simplify right side
    412,834.20x = 81,976,363,243.74
  5. Step 5: Solve for x
    x = 81,976,363,243.74/412,834.20
  6. Step 6: Final answer
    x = 198,569.70

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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.