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Finding the Third Proportional to 171,805 and 261,353

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Solution

The third proportional to 171,805 and 261,353 is: 397,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,805 : 261,353 = 261,353 : x
  2. Step 2: Convert to fraction form
    171,805/261,353 = 261,353/x
  3. Step 3: Cross multiply
    171,805x = 261,353 × 261,353
  4. Step 4: Simplify right side
    171,805x = 68,305,390,609
  5. Step 5: Solve for x
    x = 68,305,390,609/171,805
  6. Step 6: Final answer
    x = 397,575.10

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.