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Finding the Third Proportional to 138,153 and 247,872

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Solution

The third proportional to 138,153 and 247,872 is: 444,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,153 : 247,872 = 247,872 : x
  2. Step 2: Convert to fraction form
    138,153/247,872 = 247,872/x
  3. Step 3: Cross multiply
    138,153x = 247,872 × 247,872
  4. Step 4: Simplify right side
    138,153x = 61,440,528,384
  5. Step 5: Solve for x
    x = 61,440,528,384/138,153
  6. Step 6: Final answer
    x = 444,728.15

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.