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Finding the Third Proportional to 156,944 and 221,107

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Solution

The third proportional to 156,944 and 221,107 is: 311,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,944 : 221,107 = 221,107 : x
  2. Step 2: Convert to fraction form
    156,944/221,107 = 221,107/x
  3. Step 3: Cross multiply
    156,944x = 221,107 × 221,107
  4. Step 4: Simplify right side
    156,944x = 48,888,305,449
  5. Step 5: Solve for x
    x = 48,888,305,449/156,944
  6. Step 6: Final answer
    x = 311,501.59

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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.