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Finding the Fourth Proportional to 389,791.73, 584,742.95 and 119,942.25

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Solution

The fourth proportional to 389,791.73, 584,742.95 and 119,942.25 is: 179,930.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,791.73 : 584,742.95 = 119,942.25 : x
  2. Step 2: Convert to fraction form
    389,791.73/584,742.95 = 119,942.25/x
  3. Step 3: Cross multiply
    389,791.73x = 584,742.95 × 119,942.25
  4. Step 4: Simplify right side
    389,791.73x = 70,135,384,494.93
  5. Step 5: Solve for x
    x = 70,135,384,494.93/389,791.73
  6. Step 6: Final answer
    x = 179,930.41

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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.