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Finding the Fourth Proportional to 259,339.58, 389,074.97 and 72,350.94

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Solution

The fourth proportional to 259,339.58, 389,074.97 and 72,350.94 is: 108,544.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,339.58 : 389,074.97 = 72,350.94 : x
  2. Step 2: Convert to fraction form
    259,339.58/389,074.97 = 72,350.94/x
  3. Step 3: Cross multiply
    259,339.58x = 389,074.97 × 72,350.94
  4. Step 4: Simplify right side
    259,339.58x = 28,149,939,809.97
  5. Step 5: Solve for x
    x = 28,149,939,809.97/259,339.58
  6. Step 6: Final answer
    x = 108,544.71

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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.