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Finding the Third Proportional to 111,712.50 and 239,415

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Solution

The third proportional to 111,712.50 and 239,415 is: 513,098.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,712.50 : 239,415 = 239,415 : x
  2. Step 2: Convert to fraction form
    111,712.50/239,415 = 239,415/x
  3. Step 3: Cross multiply
    111,712.50x = 239,415 × 239,415
  4. Step 4: Simplify right side
    111,712.50x = 57,319,542,225
  5. Step 5: Solve for x
    x = 57,319,542,225/111,712.50
  6. Step 6: Final answer
    x = 513,098.73

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.