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Finding the Fourth Proportional to 259,054.70, 388,470.87 and 90,524.48

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Solution

The fourth proportional to 259,054.70, 388,470.87 and 90,524.48 is: 135,747.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,054.70 : 388,470.87 = 90,524.48 : x
  2. Step 2: Convert to fraction form
    259,054.70/388,470.87 = 90,524.48/x
  3. Step 3: Cross multiply
    259,054.70x = 388,470.87 × 90,524.48
  4. Step 4: Simplify right side
    259,054.70x = 35,166,121,559.54
  5. Step 5: Solve for x
    x = 35,166,121,559.54/259,054.70
  6. Step 6: Final answer
    x = 135,747.86

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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.