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Finding the Fourth Proportional to 192,440.52, 288,704.52 and 87,289.56

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Solution

The fourth proportional to 192,440.52, 288,704.52 and 87,289.56 is: 130,954.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,440.52 : 288,704.52 = 87,289.56 : x
  2. Step 2: Convert to fraction form
    192,440.52/288,704.52 = 87,289.56/x
  3. Step 3: Cross multiply
    192,440.52x = 288,704.52 × 87,289.56
  4. Step 4: Simplify right side
    192,440.52x = 25,200,890,520.81
  5. Step 5: Solve for x
    x = 25,200,890,520.81/192,440.52
  6. Step 6: Final answer
    x = 130,954.18

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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.