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Finding the Fourth Proportional to 512,163.60, 768,245.40 and 245,859.90

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Solution

The fourth proportional to 512,163.60, 768,245.40 and 245,859.90 is: 368,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,163.60 : 768,245.40 = 245,859.90 : x
  2. Step 2: Convert to fraction form
    512,163.60/768,245.40 = 245,859.90/x
  3. Step 3: Cross multiply
    512,163.60x = 768,245.40 × 245,859.90
  4. Step 4: Simplify right side
    512,163.60x = 188,880,737,219.46
  5. Step 5: Solve for x
    x = 188,880,737,219.46/512,163.60
  6. Step 6: Final answer
    x = 368,789.85

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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.