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Finding the Third Proportional to 109,800 and 239,679

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Solution

The third proportional to 109,800 and 239,679 is: 523,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,800 : 239,679 = 239,679 : x
  2. Step 2: Convert to fraction form
    109,800/239,679 = 239,679/x
  3. Step 3: Cross multiply
    109,800x = 239,679 × 239,679
  4. Step 4: Simplify right side
    109,800x = 57,446,023,041
  5. Step 5: Solve for x
    x = 57,446,023,041/109,800
  6. Step 6: Final answer
    x = 523,187.82

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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.