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Finding the Fourth Proportional to 355,440.87, 533,161.17 and 142,304.67

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Solution

The fourth proportional to 355,440.87, 533,161.17 and 142,304.67 is: 213,456.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,440.87 : 533,161.17 = 142,304.67 : x
  2. Step 2: Convert to fraction form
    355,440.87/533,161.17 = 142,304.67/x
  3. Step 3: Cross multiply
    355,440.87x = 533,161.17 × 142,304.67
  4. Step 4: Simplify right side
    355,440.87x = 75,871,324,353.66
  5. Step 5: Solve for x
    x = 75,871,324,353.66/355,440.87
  6. Step 6: Final answer
    x = 213,456.95

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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.