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Finding the Third Proportional to 320,276 and 463,890

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Solution

The third proportional to 320,276 and 463,890 is: 671,901.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,276 : 463,890 = 463,890 : x
  2. Step 2: Convert to fraction form
    320,276/463,890 = 463,890/x
  3. Step 3: Cross multiply
    320,276x = 463,890 × 463,890
  4. Step 4: Simplify right side
    320,276x = 215,193,932,100
  5. Step 5: Solve for x
    x = 215,193,932,100/320,276
  6. Step 6: Final answer
    x = 671,901.52

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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.