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Finding the Third Proportional to 157,540 and 339,816

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Solution

The third proportional to 157,540 and 339,816 is: 732,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,540 : 339,816 = 339,816 : x
  2. Step 2: Convert to fraction form
    157,540/339,816 = 339,816/x
  3. Step 3: Cross multiply
    157,540x = 339,816 × 339,816
  4. Step 4: Simplify right side
    157,540x = 115,474,913,856
  5. Step 5: Solve for x
    x = 115,474,913,856/157,540
  6. Step 6: Final answer
    x = 732,987.90

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.