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Finding the Third Proportional to 158,872 and 330,812

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Solution

The third proportional to 158,872 and 330,812 is: 688,834.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,872 : 330,812 = 330,812 : x
  2. Step 2: Convert to fraction form
    158,872/330,812 = 330,812/x
  3. Step 3: Cross multiply
    158,872x = 330,812 × 330,812
  4. Step 4: Simplify right side
    158,872x = 109,436,579,344
  5. Step 5: Solve for x
    x = 109,436,579,344/158,872
  6. Step 6: Final answer
    x = 688,834.91

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.