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Finding the Third Proportional to 201,040 and 422,744

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Solution

The third proportional to 201,040 and 422,744 is: 888,939.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,040 : 422,744 = 422,744 : x
  2. Step 2: Convert to fraction form
    201,040/422,744 = 422,744/x
  3. Step 3: Cross multiply
    201,040x = 422,744 × 422,744
  4. Step 4: Simplify right side
    201,040x = 178,712,489,536
  5. Step 5: Solve for x
    x = 178,712,489,536/201,040
  6. Step 6: Final answer
    x = 888,939.96

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.