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Finding the Fourth Proportional to 354,391.56, 531,138.60 and 154,658.52

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Solution

The fourth proportional to 354,391.56, 531,138.60 and 154,658.52 is: 231,791.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,391.56 : 531,138.60 = 154,658.52 : x
  2. Step 2: Convert to fraction form
    354,391.56/531,138.60 = 154,658.52/x
  3. Step 3: Cross multiply
    354,391.56x = 531,138.60 × 154,658.52
  4. Step 4: Simplify right side
    354,391.56x = 82,145,109,790.87
  5. Step 5: Solve for x
    x = 82,145,109,790.87/354,391.56
  6. Step 6: Final answer
    x = 231,791.95

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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.