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Finding the Third Proportional to 259,702 and 405,955

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Solution

The third proportional to 259,702 and 405,955 is: 634,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,702 : 405,955 = 405,955 : x
  2. Step 2: Convert to fraction form
    259,702/405,955 = 405,955/x
  3. Step 3: Cross multiply
    259,702x = 405,955 × 405,955
  4. Step 4: Simplify right side
    259,702x = 164,799,462,025
  5. Step 5: Solve for x
    x = 164,799,462,025/259,702
  6. Step 6: Final answer
    x = 634,571.40

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.