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Finding the Third Proportional to 121,243.50 and 263,223

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Solution

The third proportional to 121,243.50 and 263,223 is: 571,464.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,243.50 : 263,223 = 263,223 : x
  2. Step 2: Convert to fraction form
    121,243.50/263,223 = 263,223/x
  3. Step 3: Cross multiply
    121,243.50x = 263,223 × 263,223
  4. Step 4: Simplify right side
    121,243.50x = 69,286,347,729
  5. Step 5: Solve for x
    x = 69,286,347,729/121,243.50
  6. Step 6: Final answer
    x = 571,464.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.