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Finding the Third Proportional to 219,408.75 and 327,672

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Solution

The third proportional to 219,408.75 and 327,672 is: 489,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,408.75 : 327,672 = 327,672 : x
  2. Step 2: Convert to fraction form
    219,408.75/327,672 = 327,672/x
  3. Step 3: Cross multiply
    219,408.75x = 327,672 × 327,672
  4. Step 4: Simplify right side
    219,408.75x = 107,368,939,584
  5. Step 5: Solve for x
    x = 107,368,939,584/219,408.75
  6. Step 6: Final answer
    x = 489,355.78

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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.