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Finding the Third Proportional to 320,278 and 463,892

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Solution

The third proportional to 320,278 and 463,892 is: 671,903.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,278 : 463,892 = 463,892 : x
  2. Step 2: Convert to fraction form
    320,278/463,892 = 463,892/x
  3. Step 3: Cross multiply
    320,278x = 463,892 × 463,892
  4. Step 4: Simplify right side
    320,278x = 215,195,787,664
  5. Step 5: Solve for x
    x = 215,195,787,664/320,278
  6. Step 6: Final answer
    x = 671,903.12

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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.