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Finding the Third Proportional to 120,578 and 252,172

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Solution

The third proportional to 120,578 and 252,172 is: 527,382.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,578 : 252,172 = 252,172 : x
  2. Step 2: Convert to fraction form
    120,578/252,172 = 252,172/x
  3. Step 3: Cross multiply
    120,578x = 252,172 × 252,172
  4. Step 4: Simplify right side
    120,578x = 63,590,717,584
  5. Step 5: Solve for x
    x = 63,590,717,584/120,578
  6. Step 6: Final answer
    x = 527,382.42

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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.