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Finding the Fourth Proportional to 259,441.80, 389,174.34 and 79,514.04

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Solution

The fourth proportional to 259,441.80, 389,174.34 and 79,514.04 is: 119,274.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,441.80 : 389,174.34 = 79,514.04 : x
  2. Step 2: Convert to fraction form
    259,441.80/389,174.34 = 79,514.04/x
  3. Step 3: Cross multiply
    259,441.80x = 389,174.34 × 79,514.04
  4. Step 4: Simplify right side
    259,441.80x = 30,944,824,037.73
  5. Step 5: Solve for x
    x = 30,944,824,037.73/259,441.80
  6. Step 6: Final answer
    x = 119,274.63

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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.