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Finding the Third Proportional to 278,808 and 443,079

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Solution

The third proportional to 278,808 and 443,079 is: 704,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,808 : 443,079 = 443,079 : x
  2. Step 2: Convert to fraction form
    278,808/443,079 = 443,079/x
  3. Step 3: Cross multiply
    278,808x = 443,079 × 443,079
  4. Step 4: Simplify right side
    278,808x = 196,319,000,241
  5. Step 5: Solve for x
    x = 196,319,000,241/278,808
  6. Step 6: Final answer
    x = 704,136.90

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.