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Finding the Fourth Proportional to 378,866.82, 567,900.36 and 126,079.32

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Solution

The fourth proportional to 378,866.82, 567,900.36 and 126,079.32 is: 188,985.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,866.82 : 567,900.36 = 126,079.32 : x
  2. Step 2: Convert to fraction form
    378,866.82/567,900.36 = 126,079.32/x
  3. Step 3: Cross multiply
    378,866.82x = 567,900.36 × 126,079.32
  4. Step 4: Simplify right side
    378,866.82x = 71,600,491,216.56
  5. Step 5: Solve for x
    x = 71,600,491,216.56/378,866.82
  6. Step 6: Final answer
    x = 188,985.91

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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.