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Finding the Third Proportional to 201,418 and 438,799

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Solution

The third proportional to 201,418 and 438,799 is: 955,945.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,418 : 438,799 = 438,799 : x
  2. Step 2: Convert to fraction form
    201,418/438,799 = 438,799/x
  3. Step 3: Cross multiply
    201,418x = 438,799 × 438,799
  4. Step 4: Simplify right side
    201,418x = 192,544,562,401
  5. Step 5: Solve for x
    x = 192,544,562,401/201,418
  6. Step 6: Final answer
    x = 955,945.16

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.