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Finding the Third Proportional to 111,724 and 217,838

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Solution

The third proportional to 111,724 and 217,838 is: 424,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,724 : 217,838 = 217,838 : x
  2. Step 2: Convert to fraction form
    111,724/217,838 = 217,838/x
  3. Step 3: Cross multiply
    111,724x = 217,838 × 217,838
  4. Step 4: Simplify right side
    111,724x = 47,453,394,244
  5. Step 5: Solve for x
    x = 47,453,394,244/111,724
  6. Step 6: Final answer
    x = 424,737.70

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.