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Finding the Third Proportional to 138,721 and 327,266

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Solution

The third proportional to 138,721 and 327,266 is: 772,075.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721 : 327,266 = 327,266 : x
  2. Step 2: Convert to fraction form
    138,721/327,266 = 327,266/x
  3. Step 3: Cross multiply
    138,721x = 327,266 × 327,266
  4. Step 4: Simplify right side
    138,721x = 107,103,034,756
  5. Step 5: Solve for x
    x = 107,103,034,756/138,721
  6. Step 6: Final answer
    x = 772,075.13

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.