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Finding the Third Proportional to 156,727 and 220,225

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Solution

The third proportional to 156,727 and 220,225 is: 309,449.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,727 : 220,225 = 220,225 : x
  2. Step 2: Convert to fraction form
    156,727/220,225 = 220,225/x
  3. Step 3: Cross multiply
    156,727x = 220,225 × 220,225
  4. Step 4: Simplify right side
    156,727x = 48,499,050,625
  5. Step 5: Solve for x
    x = 48,499,050,625/156,727
  6. Step 6: Final answer
    x = 309,449.24

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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.