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Finding the Third Proportional to 156,910 and 342,979

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Solution

The third proportional to 156,910 and 342,979 is: 749,694.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,910 : 342,979 = 342,979 : x
  2. Step 2: Convert to fraction form
    156,910/342,979 = 342,979/x
  3. Step 3: Cross multiply
    156,910x = 342,979 × 342,979
  4. Step 4: Simplify right side
    156,910x = 117,634,594,441
  5. Step 5: Solve for x
    x = 117,634,594,441/156,910
  6. Step 6: Final answer
    x = 749,694.69

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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.