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Finding the Fourth Proportional to 378,578.55, 567,744.98 and 125,791.16

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Solution

The fourth proportional to 378,578.55, 567,744.98 and 125,791.16 is: 188,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,578.55 : 567,744.98 = 125,791.16 : x
  2. Step 2: Convert to fraction form
    378,578.55/567,744.98 = 125,791.16/x
  3. Step 3: Cross multiply
    378,578.55x = 567,744.98 × 125,791.16
  4. Step 4: Simplify right side
    378,578.55x = 71,417,296,150.70
  5. Step 5: Solve for x
    x = 71,417,296,150.70/378,578.55
  6. Step 6: Final answer
    x = 188,645.91

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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.