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Finding the Third Proportional to 120,288 and 252,000

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Solution

The third proportional to 120,288 and 252,000 is: 527,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,288 : 252,000 = 252,000 : x
  2. Step 2: Convert to fraction form
    120,288/252,000 = 252,000/x
  3. Step 3: Cross multiply
    120,288x = 252,000 × 252,000
  4. Step 4: Simplify right side
    120,288x = 63,504,000,000
  5. Step 5: Solve for x
    x = 63,504,000,000/120,288
  6. Step 6: Final answer
    x = 527,932.96

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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.