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Finding the Fourth Proportional to 422,879.29, 634,321.05 and 107,336.29

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Solution

The fourth proportional to 422,879.29, 634,321.05 and 107,336.29 is: 161,004.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,879.29 : 634,321.05 = 107,336.29 : x
  2. Step 2: Convert to fraction form
    422,879.29/634,321.05 = 107,336.29/x
  3. Step 3: Cross multiply
    422,879.29x = 634,321.05 × 107,336.29
  4. Step 4: Simplify right side
    422,879.29x = 68,085,668,175.90
  5. Step 5: Solve for x
    x = 68,085,668,175.90/422,879.29
  6. Step 6: Final answer
    x = 161,004.97

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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.