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Finding the Third Proportional to 157,018 and 339,172

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Solution

The third proportional to 157,018 and 339,172 is: 732,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,018 : 339,172 = 339,172 : x
  2. Step 2: Convert to fraction form
    157,018/339,172 = 339,172/x
  3. Step 3: Cross multiply
    157,018x = 339,172 × 339,172
  4. Step 4: Simplify right side
    157,018x = 115,037,645,584
  5. Step 5: Solve for x
    x = 115,037,645,584/157,018
  6. Step 6: Final answer
    x = 732,639.86

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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.