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Finding the Fourth Proportional to 192,380.80, 288,571.20 and 156,951.40

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Solution

The fourth proportional to 192,380.80, 288,571.20 and 156,951.40 is: 235,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,380.80 : 288,571.20 = 156,951.40 : x
  2. Step 2: Convert to fraction form
    192,380.80/288,571.20 = 156,951.40/x
  3. Step 3: Cross multiply
    192,380.80x = 288,571.20 × 156,951.40
  4. Step 4: Simplify right side
    192,380.80x = 45,291,653,839.68
  5. Step 5: Solve for x
    x = 45,291,653,839.68/192,380.80
  6. Step 6: Final answer
    x = 235,427.10

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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.