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Finding the Third Proportional to 156,712.22 and 220,203.56

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Solution

The third proportional to 156,712.22 and 220,203.56 is: 309,418.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,712.22 : 220,203.56 = 220,203.56 : x
  2. Step 2: Convert to fraction form
    156,712.22/220,203.56 = 220,203.56/x
  3. Step 3: Cross multiply
    156,712.22x = 220,203.56 × 220,203.56
  4. Step 4: Simplify right side
    156,712.22x = 48,489,608,937.69
  5. Step 5: Solve for x
    x = 48,489,608,937.69/156,712.22
  6. Step 6: Final answer
    x = 309,418.18

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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.