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Finding the Third Proportional to 320,280 and 463,872

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Solution

The third proportional to 320,280 and 463,872 is: 671,840.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,280 : 463,872 = 463,872 : x
  2. Step 2: Convert to fraction form
    320,280/463,872 = 463,872/x
  3. Step 3: Cross multiply
    320,280x = 463,872 × 463,872
  4. Step 4: Simplify right side
    320,280x = 215,177,232,384
  5. Step 5: Solve for x
    x = 215,177,232,384/320,280
  6. Step 6: Final answer
    x = 671,840.99

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.