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Finding the Third Proportional to 103,979 and 225,439

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Solution

The third proportional to 103,979 and 225,439 is: 488,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,979 : 225,439 = 225,439 : x
  2. Step 2: Convert to fraction form
    103,979/225,439 = 225,439/x
  3. Step 3: Cross multiply
    103,979x = 225,439 × 225,439
  4. Step 4: Simplify right side
    103,979x = 50,822,742,721
  5. Step 5: Solve for x
    x = 50,822,742,721/103,979
  6. Step 6: Final answer
    x = 488,778.91

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.