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Finding the Third Proportional to 207,690 and 451,830

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Solution

The third proportional to 207,690 and 451,830 is: 982,957.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,690 : 451,830 = 451,830 : x
  2. Step 2: Convert to fraction form
    207,690/451,830 = 451,830/x
  3. Step 3: Cross multiply
    207,690x = 451,830 × 451,830
  4. Step 4: Simplify right side
    207,690x = 204,150,348,900
  5. Step 5: Solve for x
    x = 204,150,348,900/207,690
  6. Step 6: Final answer
    x = 982,957.05

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.