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Finding the Fourth Proportional to 378,768.73, 567,753.67 and 125,981.71

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Solution

The fourth proportional to 378,768.73, 567,753.67 and 125,981.71 is: 188,839.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,768.73 : 567,753.67 = 125,981.71 : x
  2. Step 2: Convert to fraction form
    378,768.73/567,753.67 = 125,981.71/x
  3. Step 3: Cross multiply
    378,768.73x = 567,753.67 × 125,981.71
  4. Step 4: Simplify right side
    378,768.73x = 71,526,578,205.38
  5. Step 5: Solve for x
    x = 71,526,578,205.38/378,768.73
  6. Step 6: Final answer
    x = 188,839.71

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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.