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Finding the Third Proportional to 109,878.75 and 239,892.75

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Solution

The third proportional to 109,878.75 and 239,892.75 is: 523,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,878.75 : 239,892.75 = 239,892.75 : x
  2. Step 2: Convert to fraction form
    109,878.75/239,892.75 = 239,892.75/x
  3. Step 3: Cross multiply
    109,878.75x = 239,892.75 × 239,892.75
  4. Step 4: Simplify right side
    109,878.75x = 57,548,531,502.56
  5. Step 5: Solve for x
    x = 57,548,531,502.56/109,878.75
  6. Step 6: Final answer
    x = 523,745.78

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.