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Finding the Fourth Proportional to 259,423.78, 389,147.38 and 79,496.26

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Solution

The fourth proportional to 259,423.78, 389,147.38 and 79,496.26 is: 119,247.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,423.78 : 389,147.38 = 79,496.26 : x
  2. Step 2: Convert to fraction form
    259,423.78/389,147.38 = 79,496.26/x
  3. Step 3: Cross multiply
    259,423.78x = 389,147.38 × 79,496.26
  4. Step 4: Simplify right side
    259,423.78x = 30,935,761,298.80
  5. Step 5: Solve for x
    x = 30,935,761,298.80/259,423.78
  6. Step 6: Final answer
    x = 119,247.98

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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.