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Finding the Third Proportional to 219,437 and 327,720

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Solution

The third proportional to 219,437 and 327,720 is: 489,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,437 : 327,720 = 327,720 : x
  2. Step 2: Convert to fraction form
    219,437/327,720 = 327,720/x
  3. Step 3: Cross multiply
    219,437x = 327,720 × 327,720
  4. Step 4: Simplify right side
    219,437x = 107,400,398,400
  5. Step 5: Solve for x
    x = 107,400,398,400/219,437
  6. Step 6: Final answer
    x = 489,436.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.