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Finding the Third Proportional to 120,828 and 284,286

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Solution

The third proportional to 120,828 and 284,286 is: 668,872.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,828 : 284,286 = 284,286 : x
  2. Step 2: Convert to fraction form
    120,828/284,286 = 284,286/x
  3. Step 3: Cross multiply
    120,828x = 284,286 × 284,286
  4. Step 4: Simplify right side
    120,828x = 80,818,529,796
  5. Step 5: Solve for x
    x = 80,818,529,796/120,828
  6. Step 6: Final answer
    x = 668,872.53

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.