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Finding the Third Proportional to 239,230 and 385,452

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Solution

The third proportional to 239,230 and 385,452 is: 621,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,230 : 385,452 = 385,452 : x
  2. Step 2: Convert to fraction form
    239,230/385,452 = 385,452/x
  3. Step 3: Cross multiply
    239,230x = 385,452 × 385,452
  4. Step 4: Simplify right side
    239,230x = 148,573,244,304
  5. Step 5: Solve for x
    x = 148,573,244,304/239,230
  6. Step 6: Final answer
    x = 621,047.71

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.