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Finding the Third Proportional to 140,889 and 218,493

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Solution

The third proportional to 140,889 and 218,493 is: 338,842.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,889 : 218,493 = 218,493 : x
  2. Step 2: Convert to fraction form
    140,889/218,493 = 218,493/x
  3. Step 3: Cross multiply
    140,889x = 218,493 × 218,493
  4. Step 4: Simplify right side
    140,889x = 47,739,191,049
  5. Step 5: Solve for x
    x = 47,739,191,049/140,889
  6. Step 6: Final answer
    x = 338,842.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.