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Finding the Third Proportional to 157,128 and 339,156

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Solution

The third proportional to 157,128 and 339,156 is: 732,057.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,128 : 339,156 = 339,156 : x
  2. Step 2: Convert to fraction form
    157,128/339,156 = 339,156/x
  3. Step 3: Cross multiply
    157,128x = 339,156 × 339,156
  4. Step 4: Simplify right side
    157,128x = 115,026,792,336
  5. Step 5: Solve for x
    x = 115,026,792,336/157,128
  6. Step 6: Final answer
    x = 732,057.89

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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.