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Finding the Fourth Proportional to 256,133.80, 384,200.70 and 252,197.20

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Solution

The fourth proportional to 256,133.80, 384,200.70 and 252,197.20 is: 378,295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,133.80 : 384,200.70 = 252,197.20 : x
  2. Step 2: Convert to fraction form
    256,133.80/384,200.70 = 252,197.20/x
  3. Step 3: Cross multiply
    256,133.80x = 384,200.70 × 252,197.20
  4. Step 4: Simplify right side
    256,133.80x = 96,894,340,778.04
  5. Step 5: Solve for x
    x = 96,894,340,778.04/256,133.80
  6. Step 6: Final answer
    x = 378,295.80

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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.