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Finding the Fourth Proportional to 259,544.80, 389,374.80 and 119,269.60

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Solution

The fourth proportional to 259,544.80, 389,374.80 and 119,269.60 is: 178,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,544.80 : 389,374.80 = 119,269.60 : x
  2. Step 2: Convert to fraction form
    259,544.80/389,374.80 = 119,269.60/x
  3. Step 3: Cross multiply
    259,544.80x = 389,374.80 × 119,269.60
  4. Step 4: Simplify right side
    259,544.80x = 46,440,576,646.08
  5. Step 5: Solve for x
    x = 46,440,576,646.08/259,544.80
  6. Step 6: Final answer
    x = 178,930.87

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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.