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Finding the Third Proportional to 115,239 and 251,491

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Solution

The third proportional to 115,239 and 251,491 is: 548,839.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,239 : 251,491 = 251,491 : x
  2. Step 2: Convert to fraction form
    115,239/251,491 = 251,491/x
  3. Step 3: Cross multiply
    115,239x = 251,491 × 251,491
  4. Step 4: Simplify right side
    115,239x = 63,247,723,081
  5. Step 5: Solve for x
    x = 63,247,723,081/115,239
  6. Step 6: Final answer
    x = 548,839.57

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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.