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Finding the Third Proportional to 185,940 and 406,912

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Solution

The third proportional to 185,940 and 406,912 is: 890,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,940 : 406,912 = 406,912 : x
  2. Step 2: Convert to fraction form
    185,940/406,912 = 406,912/x
  3. Step 3: Cross multiply
    185,940x = 406,912 × 406,912
  4. Step 4: Simplify right side
    185,940x = 165,577,375,744
  5. Step 5: Solve for x
    x = 165,577,375,744/185,940
  6. Step 6: Final answer
    x = 890,488.20

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.