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Finding the Third Proportional to 155,736 and 339,312

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Solution

The third proportional to 155,736 and 339,312 is: 739,280.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,736 : 339,312 = 339,312 : x
  2. Step 2: Convert to fraction form
    155,736/339,312 = 339,312/x
  3. Step 3: Cross multiply
    155,736x = 339,312 × 339,312
  4. Step 4: Simplify right side
    155,736x = 115,132,633,344
  5. Step 5: Solve for x
    x = 115,132,633,344/155,736
  6. Step 6: Final answer
    x = 739,280.79

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.