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Finding the Third Proportional to 156,918 and 339,596

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Solution

The third proportional to 156,918 and 339,596 is: 734,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,918 : 339,596 = 339,596 : x
  2. Step 2: Convert to fraction form
    156,918/339,596 = 339,596/x
  3. Step 3: Cross multiply
    156,918x = 339,596 × 339,596
  4. Step 4: Simplify right side
    156,918x = 115,325,443,216
  5. Step 5: Solve for x
    x = 115,325,443,216/156,918
  6. Step 6: Final answer
    x = 734,940.82

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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.