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Finding the Third Proportional to 138,585 and 223,191

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Solution

The third proportional to 138,585 and 223,191 is: 359,448.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,585 : 223,191 = 223,191 : x
  2. Step 2: Convert to fraction form
    138,585/223,191 = 223,191/x
  3. Step 3: Cross multiply
    138,585x = 223,191 × 223,191
  4. Step 4: Simplify right side
    138,585x = 49,814,222,481
  5. Step 5: Solve for x
    x = 49,814,222,481/138,585
  6. Step 6: Final answer
    x = 359,448.88

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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.