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Finding the Third Proportional to 200,813 and 267,721

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Solution

The third proportional to 200,813 and 267,721 is: 356,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,813 : 267,721 = 267,721 : x
  2. Step 2: Convert to fraction form
    200,813/267,721 = 267,721/x
  3. Step 3: Cross multiply
    200,813x = 267,721 × 267,721
  4. Step 4: Simplify right side
    200,813x = 71,674,533,841
  5. Step 5: Solve for x
    x = 71,674,533,841/200,813
  6. Step 6: Final answer
    x = 356,921.78

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.