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Finding the Third Proportional to 131,611 and 209,189

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Solution

The third proportional to 131,611 and 209,189 is: 332,495.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,611 : 209,189 = 209,189 : x
  2. Step 2: Convert to fraction form
    131,611/209,189 = 209,189/x
  3. Step 3: Cross multiply
    131,611x = 209,189 × 209,189
  4. Step 4: Simplify right side
    131,611x = 43,760,037,721
  5. Step 5: Solve for x
    x = 43,760,037,721/131,611
  6. Step 6: Final answer
    x = 332,495.29

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.