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Finding the Third Proportional to 82,221 and 176,919

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Solution

The third proportional to 82,221 and 176,919 is: 380,685.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,221 : 176,919 = 176,919 : x
  2. Step 2: Convert to fraction form
    82,221/176,919 = 176,919/x
  3. Step 3: Cross multiply
    82,221x = 176,919 × 176,919
  4. Step 4: Simplify right side
    82,221x = 31,300,332,561
  5. Step 5: Solve for x
    x = 31,300,332,561/82,221
  6. Step 6: Final answer
    x = 380,685.38

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.