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Finding the Third Proportional to 159,408 and 338,256

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Solution

The third proportional to 159,408 and 338,256 is: 717,762.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,408 : 338,256 = 338,256 : x
  2. Step 2: Convert to fraction form
    159,408/338,256 = 338,256/x
  3. Step 3: Cross multiply
    159,408x = 338,256 × 338,256
  4. Step 4: Simplify right side
    159,408x = 114,417,121,536
  5. Step 5: Solve for x
    x = 114,417,121,536/159,408
  6. Step 6: Final answer
    x = 717,762.73

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.