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Finding the Third Proportional to 157,203 and 339,420

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Solution

The third proportional to 157,203 and 339,420 is: 732,848.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,203 : 339,420 = 339,420 : x
  2. Step 2: Convert to fraction form
    157,203/339,420 = 339,420/x
  3. Step 3: Cross multiply
    157,203x = 339,420 × 339,420
  4. Step 4: Simplify right side
    157,203x = 115,205,936,400
  5. Step 5: Solve for x
    x = 115,205,936,400/157,203
  6. Step 6: Final answer
    x = 732,848.21

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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.