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Finding the Third Proportional to 155,982 and 217,329

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Solution

The third proportional to 155,982 and 217,329 is: 302,803.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,982 : 217,329 = 217,329 : x
  2. Step 2: Convert to fraction form
    155,982/217,329 = 217,329/x
  3. Step 3: Cross multiply
    155,982x = 217,329 × 217,329
  4. Step 4: Simplify right side
    155,982x = 47,231,894,241
  5. Step 5: Solve for x
    x = 47,231,894,241/155,982
  6. Step 6: Final answer
    x = 302,803.49

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.