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Finding the Third Proportional to 156,979 and 343,099

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Solution

The third proportional to 156,979 and 343,099 is: 749,889.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,979 : 343,099 = 343,099 : x
  2. Step 2: Convert to fraction form
    156,979/343,099 = 343,099/x
  3. Step 3: Cross multiply
    156,979x = 343,099 × 343,099
  4. Step 4: Simplify right side
    156,979x = 117,716,923,801
  5. Step 5: Solve for x
    x = 117,716,923,801/156,979
  6. Step 6: Final answer
    x = 749,889.63

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.