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Finding the Fourth Proportional to 422,753.60, 634,213.12 and 156,516.48

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Solution

The fourth proportional to 422,753.60, 634,213.12 and 156,516.48 is: 234,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,753.60 : 634,213.12 = 156,516.48 : x
  2. Step 2: Convert to fraction form
    422,753.60/634,213.12 = 156,516.48/x
  3. Step 3: Cross multiply
    422,753.60x = 634,213.12 × 156,516.48
  4. Step 4: Simplify right side
    422,753.60x = 99,264,805,112.22
  5. Step 5: Solve for x
    x = 99,264,805,112.22/422,753.60
  6. Step 6: Final answer
    x = 234,805.35

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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.