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Finding the Third Proportional to 138,270 and 291,294

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Solution

The third proportional to 138,270 and 291,294 is: 613,670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,270 : 291,294 = 291,294 : x
  2. Step 2: Convert to fraction form
    138,270/291,294 = 291,294/x
  3. Step 3: Cross multiply
    138,270x = 291,294 × 291,294
  4. Step 4: Simplify right side
    138,270x = 84,852,194,436
  5. Step 5: Solve for x
    x = 84,852,194,436/138,270
  6. Step 6: Final answer
    x = 613,670.31

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.