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Finding the Third Proportional to 129,048 and 269,920

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Solution

The third proportional to 129,048 and 269,920 is: 564,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,048 : 269,920 = 269,920 : x
  2. Step 2: Convert to fraction form
    129,048/269,920 = 269,920/x
  3. Step 3: Cross multiply
    129,048x = 269,920 × 269,920
  4. Step 4: Simplify right side
    129,048x = 72,856,806,400
  5. Step 5: Solve for x
    x = 72,856,806,400/129,048
  6. Step 6: Final answer
    x = 564,571.37

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.