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Finding the Third Proportional to 168,462 and 255,419

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Solution

The third proportional to 168,462 and 255,419 is: 387,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,462 : 255,419 = 255,419 : x
  2. Step 2: Convert to fraction form
    168,462/255,419 = 255,419/x
  3. Step 3: Cross multiply
    168,462x = 255,419 × 255,419
  4. Step 4: Simplify right side
    168,462x = 65,238,865,561
  5. Step 5: Solve for x
    x = 65,238,865,561/168,462
  6. Step 6: Final answer
    x = 387,261.61

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.