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Finding the Third Proportional to 140,393 and 331,421

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Solution

The third proportional to 140,393 and 331,421 is: 782,374.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,393 : 331,421 = 331,421 : x
  2. Step 2: Convert to fraction form
    140,393/331,421 = 331,421/x
  3. Step 3: Cross multiply
    140,393x = 331,421 × 331,421
  4. Step 4: Simplify right side
    140,393x = 109,839,879,241
  5. Step 5: Solve for x
    x = 109,839,879,241/140,393
  6. Step 6: Final answer
    x = 782,374.33

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.