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Finding the Third Proportional to 155,916 and 330,372

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Solution

The third proportional to 155,916 and 330,372 is: 700,028.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,916 : 330,372 = 330,372 : x
  2. Step 2: Convert to fraction form
    155,916/330,372 = 330,372/x
  3. Step 3: Cross multiply
    155,916x = 330,372 × 330,372
  4. Step 4: Simplify right side
    155,916x = 109,145,658,384
  5. Step 5: Solve for x
    x = 109,145,658,384/155,916
  6. Step 6: Final answer
    x = 700,028.59

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.