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Finding the Third Proportional to 259,858.88 and 388,728.75

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Solution

The third proportional to 259,858.88 and 388,728.75 is: 581,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,858.88 : 388,728.75 = 388,728.75 : x
  2. Step 2: Convert to fraction form
    259,858.88/388,728.75 = 388,728.75/x
  3. Step 3: Cross multiply
    259,858.88x = 388,728.75 × 388,728.75
  4. Step 4: Simplify right side
    259,858.88x = 151,110,041,076.56
  5. Step 5: Solve for x
    x = 151,110,041,076.56/259,858.88
  6. Step 6: Final answer
    x = 581,508.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.