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Finding the Third Proportional to 138,566 and 223,149

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Solution

The third proportional to 138,566 and 223,149 is: 359,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,566 : 223,149 = 223,149 : x
  2. Step 2: Convert to fraction form
    138,566/223,149 = 223,149/x
  3. Step 3: Cross multiply
    138,566x = 223,149 × 223,149
  4. Step 4: Simplify right side
    138,566x = 49,795,476,201
  5. Step 5: Solve for x
    x = 49,795,476,201/138,566
  6. Step 6: Final answer
    x = 359,362.88

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.