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Finding the Third Proportional to 273,670 and 409,408

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Solution

The third proportional to 273,670 and 409,408 is: 612,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,670 : 409,408 = 409,408 : x
  2. Step 2: Convert to fraction form
    273,670/409,408 = 409,408/x
  3. Step 3: Cross multiply
    273,670x = 409,408 × 409,408
  4. Step 4: Simplify right side
    273,670x = 167,614,910,464
  5. Step 5: Solve for x
    x = 167,614,910,464/273,670
  6. Step 6: Final answer
    x = 612,470.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.