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Finding the Third Proportional to 171,418 and 256,963

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Solution

The third proportional to 171,418 and 256,963 is: 385,198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,418 : 256,963 = 256,963 : x
  2. Step 2: Convert to fraction form
    171,418/256,963 = 256,963/x
  3. Step 3: Cross multiply
    171,418x = 256,963 × 256,963
  4. Step 4: Simplify right side
    171,418x = 66,029,983,369
  5. Step 5: Solve for x
    x = 66,029,983,369/171,418
  6. Step 6: Final answer
    x = 385,198.66

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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.