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Finding the Third Proportional to 167,676 and 261,721

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Solution

The third proportional to 167,676 and 261,721 is: 408,513.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,676 : 261,721 = 261,721 : x
  2. Step 2: Convert to fraction form
    167,676/261,721 = 261,721/x
  3. Step 3: Cross multiply
    167,676x = 261,721 × 261,721
  4. Step 4: Simplify right side
    167,676x = 68,497,881,841
  5. Step 5: Solve for x
    x = 68,497,881,841/167,676
  6. Step 6: Final answer
    x = 408,513.33

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.