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Finding the Third Proportional to 122,197.50 and 261,479.25

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Solution

The third proportional to 122,197.50 and 261,479.25 is: 559,515.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,197.50 : 261,479.25 = 261,479.25 : x
  2. Step 2: Convert to fraction form
    122,197.50/261,479.25 = 261,479.25/x
  3. Step 3: Cross multiply
    122,197.50x = 261,479.25 × 261,479.25
  4. Step 4: Simplify right side
    122,197.50x = 68,371,398,180.56
  5. Step 5: Solve for x
    x = 68,371,398,180.56/122,197.50
  6. Step 6: Final answer
    x = 559,515.52

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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.