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Finding the Fourth Proportional to 422,627.76, 634,015.38 and 185,964.30

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Solution

The fourth proportional to 422,627.76, 634,015.38 and 185,964.30 is: 278,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,627.76 : 634,015.38 = 185,964.30 : x
  2. Step 2: Convert to fraction form
    422,627.76/634,015.38 = 185,964.30/x
  3. Step 3: Cross multiply
    422,627.76x = 634,015.38 × 185,964.30
  4. Step 4: Simplify right side
    422,627.76x = 117,904,226,330.93
  5. Step 5: Solve for x
    x = 117,904,226,330.93/422,627.76
  6. Step 6: Final answer
    x = 278,978.90

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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.