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Finding the Fourth Proportional to 259,257.38, 388,943.16 and 79,344.19

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Solution

The fourth proportional to 259,257.38, 388,943.16 and 79,344.19 is: 119,033.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,257.38 : 388,943.16 = 79,344.19 : x
  2. Step 2: Convert to fraction form
    259,257.38/388,943.16 = 79,344.19/x
  3. Step 3: Cross multiply
    259,257.38x = 388,943.16 × 79,344.19
  4. Step 4: Simplify right side
    259,257.38x = 30,860,380,184.60
  5. Step 5: Solve for x
    x = 30,860,380,184.60/259,257.38
  6. Step 6: Final answer
    x = 119,033.76

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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.