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Finding the Third Proportional to 339,771.50 and 408,048

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Solution

The third proportional to 339,771.50 and 408,048 is: 490,044.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,771.50 : 408,048 = 408,048 : x
  2. Step 2: Convert to fraction form
    339,771.50/408,048 = 408,048/x
  3. Step 3: Cross multiply
    339,771.50x = 408,048 × 408,048
  4. Step 4: Simplify right side
    339,771.50x = 166,503,170,304
  5. Step 5: Solve for x
    x = 166,503,170,304/339,771.50
  6. Step 6: Final answer
    x = 490,044.55

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.