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Finding the Third Proportional to 148,508 and 326,420

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Solution

The third proportional to 148,508 and 326,420 is: 717,469.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,508 : 326,420 = 326,420 : x
  2. Step 2: Convert to fraction form
    148,508/326,420 = 326,420/x
  3. Step 3: Cross multiply
    148,508x = 326,420 × 326,420
  4. Step 4: Simplify right side
    148,508x = 106,550,016,400
  5. Step 5: Solve for x
    x = 106,550,016,400/148,508
  6. Step 6: Final answer
    x = 717,469.88

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.