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Finding the Fourth Proportional to 419,937.39, 629,776.89 and 120,337.65

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Solution

The fourth proportional to 419,937.39, 629,776.89 and 120,337.65 is: 180,469.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,937.39 : 629,776.89 = 120,337.65 : x
  2. Step 2: Convert to fraction form
    419,937.39/629,776.89 = 120,337.65/x
  3. Step 3: Cross multiply
    419,937.39x = 629,776.89 × 120,337.65
  4. Step 4: Simplify right side
    419,937.39x = 75,785,870,966.91
  5. Step 5: Solve for x
    x = 75,785,870,966.91/419,937.39
  6. Step 6: Final answer
    x = 180,469.45

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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.