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Finding the Third Proportional to 192,770 and 417,720

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Solution

The third proportional to 192,770 and 417,720 is: 905,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,770 : 417,720 = 417,720 : x
  2. Step 2: Convert to fraction form
    192,770/417,720 = 417,720/x
  3. Step 3: Cross multiply
    192,770x = 417,720 × 417,720
  4. Step 4: Simplify right side
    192,770x = 174,489,998,400
  5. Step 5: Solve for x
    x = 174,489,998,400/192,770
  6. Step 6: Final answer
    x = 905,171.96

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.