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Finding the Fourth Proportional to 276,798.30, 415,175.85 and 108,285.90

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Solution

The fourth proportional to 276,798.30, 415,175.85 and 108,285.90 is: 162,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,798.30 : 415,175.85 = 108,285.90 : x
  2. Step 2: Convert to fraction form
    276,798.30/415,175.85 = 108,285.90/x
  3. Step 3: Cross multiply
    276,798.30x = 415,175.85 × 108,285.90
  4. Step 4: Simplify right side
    276,798.30x = 44,957,690,575.52
  5. Step 5: Solve for x
    x = 44,957,690,575.52/276,798.30
  6. Step 6: Final answer
    x = 162,420.40

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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.