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Finding the Fourth Proportional to 279,794.40, 419,691.60 and 92,805.90

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Solution

The fourth proportional to 279,794.40, 419,691.60 and 92,805.90 is: 139,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,794.40 : 419,691.60 = 92,805.90 : x
  2. Step 2: Convert to fraction form
    279,794.40/419,691.60 = 92,805.90/x
  3. Step 3: Cross multiply
    279,794.40x = 419,691.60 × 92,805.90
  4. Step 4: Simplify right side
    279,794.40x = 38,949,856,660.44
  5. Step 5: Solve for x
    x = 38,949,856,660.44/279,794.40
  6. Step 6: Final answer
    x = 139,208.85

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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.