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Finding the Third Proportional to 292,436 and 396,270

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Solution

The third proportional to 292,436 and 396,270 is: 536,971.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,436 : 396,270 = 396,270 : x
  2. Step 2: Convert to fraction form
    292,436/396,270 = 396,270/x
  3. Step 3: Cross multiply
    292,436x = 396,270 × 396,270
  4. Step 4: Simplify right side
    292,436x = 157,029,912,900
  5. Step 5: Solve for x
    x = 157,029,912,900/292,436
  6. Step 6: Final answer
    x = 536,971.89

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.