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Finding the Fourth Proportional to 378,607.80, 567,788.87 and 125,820.36

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Solution

The fourth proportional to 378,607.80, 567,788.87 and 125,820.36 is: 188,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,607.80 : 567,788.87 = 125,820.36 : x
  2. Step 2: Convert to fraction form
    378,607.80/567,788.87 = 125,820.36/x
  3. Step 3: Cross multiply
    378,607.80x = 567,788.87 × 125,820.36
  4. Step 4: Simplify right side
    378,607.80x = 71,439,399,398.29
  5. Step 5: Solve for x
    x = 71,439,399,398.29/378,607.80
  6. Step 6: Final answer
    x = 188,689.72

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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.