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Finding the Third Proportional to 168,408 and 268,380

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Solution

The third proportional to 168,408 and 268,380 is: 427,698.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,408 : 268,380 = 268,380 : x
  2. Step 2: Convert to fraction form
    168,408/268,380 = 268,380/x
  3. Step 3: Cross multiply
    168,408x = 268,380 × 268,380
  4. Step 4: Simplify right side
    168,408x = 72,027,824,400
  5. Step 5: Solve for x
    x = 72,027,824,400/168,408
  6. Step 6: Final answer
    x = 427,698.35

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.