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Finding the Fourth Proportional to 404,853.56, 606,873.92 and 138,431.87

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Solution

The fourth proportional to 404,853.56, 606,873.92 and 138,431.87 is: 207,508.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,853.56 : 606,873.92 = 138,431.87 : x
  2. Step 2: Convert to fraction form
    404,853.56/606,873.92 = 138,431.87/x
  3. Step 3: Cross multiply
    404,853.56x = 606,873.92 × 138,431.87
  4. Step 4: Simplify right side
    404,853.56x = 84,010,691,945.91
  5. Step 5: Solve for x
    x = 84,010,691,945.91/404,853.56
  6. Step 6: Final answer
    x = 207,508.84

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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.