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Finding the Third Proportional to 136,780 and 209,950

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Solution

The third proportional to 136,780 and 209,950 is: 322,262.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780 : 209,950 = 209,950 : x
  2. Step 2: Convert to fraction form
    136,780/209,950 = 209,950/x
  3. Step 3: Cross multiply
    136,780x = 209,950 × 209,950
  4. Step 4: Simplify right side
    136,780x = 44,079,002,500
  5. Step 5: Solve for x
    x = 44,079,002,500/136,780
  6. Step 6: Final answer
    x = 322,262.04

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.