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Finding the Fourth Proportional to 251,138.20, 377,321.70 and 188,930.20

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Solution

The fourth proportional to 251,138.20, 377,321.70 and 188,930.20 is: 283,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,138.20 : 377,321.70 = 188,930.20 : x
  2. Step 2: Convert to fraction form
    251,138.20/377,321.70 = 188,930.20/x
  3. Step 3: Cross multiply
    251,138.20x = 377,321.70 × 188,930.20
  4. Step 4: Simplify right side
    251,138.20x = 71,287,464,245.34
  5. Step 5: Solve for x
    x = 71,287,464,245.34/251,138.20
  6. Step 6: Final answer
    x = 283,857.51

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1.5x scale

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.