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Finding the Third Proportional to 156,743 and 220,250

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Solution

The third proportional to 156,743 and 220,250 is: 309,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,743 : 220,250 = 220,250 : x
  2. Step 2: Convert to fraction form
    156,743/220,250 = 220,250/x
  3. Step 3: Cross multiply
    156,743x = 220,250 × 220,250
  4. Step 4: Simplify right side
    156,743x = 48,510,062,500
  5. Step 5: Solve for x
    x = 48,510,062,500/156,743
  6. Step 6: Final answer
    x = 309,487.90

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.