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Finding the Third Proportional to 201,405 and 438,755

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Solution

The third proportional to 201,405 and 438,755 is: 955,815.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,405 : 438,755 = 438,755 : x
  2. Step 2: Convert to fraction form
    201,405/438,755 = 438,755/x
  3. Step 3: Cross multiply
    201,405x = 438,755 × 438,755
  4. Step 4: Simplify right side
    201,405x = 192,505,950,025
  5. Step 5: Solve for x
    x = 192,505,950,025/201,405
  6. Step 6: Final answer
    x = 955,815.15

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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.