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Finding the Third Proportional to 267,108 and 415,980

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Solution

The third proportional to 267,108 and 415,980 is: 647,825.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,108 : 415,980 = 415,980 : x
  2. Step 2: Convert to fraction form
    267,108/415,980 = 415,980/x
  3. Step 3: Cross multiply
    267,108x = 415,980 × 415,980
  4. Step 4: Simplify right side
    267,108x = 173,039,360,400
  5. Step 5: Solve for x
    x = 173,039,360,400/267,108
  6. Step 6: Final answer
    x = 647,825.45

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.