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Finding the Fourth Proportional to 259,424.78, 389,148.88 and 79,497.26

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Solution

The fourth proportional to 259,424.78, 389,148.88 and 79,497.26 is: 119,249.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,424.78 : 389,148.88 = 79,497.26 : x
  2. Step 2: Convert to fraction form
    259,424.78/389,148.88 = 79,497.26/x
  3. Step 3: Cross multiply
    259,424.78x = 389,148.88 × 79,497.26
  4. Step 4: Simplify right side
    259,424.78x = 30,936,269,692.07
  5. Step 5: Solve for x
    x = 30,936,269,692.07/259,424.78
  6. Step 6: Final answer
    x = 119,249.48

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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.