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Finding the Third Proportional to 212,598 and 329,660

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Solution

The third proportional to 212,598 and 329,660 is: 511,179.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,598 : 329,660 = 329,660 : x
  2. Step 2: Convert to fraction form
    212,598/329,660 = 329,660/x
  3. Step 3: Cross multiply
    212,598x = 329,660 × 329,660
  4. Step 4: Simplify right side
    212,598x = 108,675,715,600
  5. Step 5: Solve for x
    x = 108,675,715,600/212,598
  6. Step 6: Final answer
    x = 511,179.39

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.