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Finding the Third Proportional to 156,930 and 343,018

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Solution

The third proportional to 156,930 and 343,018 is: 749,769.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930 : 343,018 = 343,018 : x
  2. Step 2: Convert to fraction form
    156,930/343,018 = 343,018/x
  3. Step 3: Cross multiply
    156,930x = 343,018 × 343,018
  4. Step 4: Simplify right side
    156,930x = 117,661,348,324
  5. Step 5: Solve for x
    x = 117,661,348,324/156,930
  6. Step 6: Final answer
    x = 749,769.63

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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.