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Finding the Third Proportional to 122,419.50 and 263,505

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Solution

The third proportional to 122,419.50 and 263,505 is: 567,188.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,419.50 : 263,505 = 263,505 : x
  2. Step 2: Convert to fraction form
    122,419.50/263,505 = 263,505/x
  3. Step 3: Cross multiply
    122,419.50x = 263,505 × 263,505
  4. Step 4: Simplify right side
    122,419.50x = 69,434,885,025
  5. Step 5: Solve for x
    x = 69,434,885,025/122,419.50
  6. Step 6: Final answer
    x = 567,188.11

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.