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Finding the Fourth Proportional to 422,604.87, 633,981.09 and 185,941.37

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Solution

The fourth proportional to 422,604.87, 633,981.09 and 185,941.37 is: 278,944.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,604.87 : 633,981.09 = 185,941.37 : x
  2. Step 2: Convert to fraction form
    422,604.87/633,981.09 = 185,941.37/x
  3. Step 3: Cross multiply
    422,604.87x = 633,981.09 × 185,941.37
  4. Step 4: Simplify right side
    422,604.87x = 117,883,309,258.79
  5. Step 5: Solve for x
    x = 117,883,309,258.79/422,604.87
  6. Step 6: Final answer
    x = 278,944.51

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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.