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Finding the Fourth Proportional to 422,635.52, 633,331.20 and 185,761.28

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Solution

The fourth proportional to 422,635.52, 633,331.20 and 185,761.28 is: 278,368.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,635.52 : 633,331.20 = 185,761.28 : x
  2. Step 2: Convert to fraction form
    422,635.52/633,331.20 = 185,761.28/x
  3. Step 3: Cross multiply
    422,635.52x = 633,331.20 × 185,761.28
  4. Step 4: Simplify right side
    422,635.52x = 117,648,414,375.94
  5. Step 5: Solve for x
    x = 117,648,414,375.94/422,635.52
  6. Step 6: Final answer
    x = 278,368.50

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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.