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Finding the Fourth Proportional to 317,771.85, 476,651.60 and 128,227.19

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Solution

The fourth proportional to 317,771.85, 476,651.60 and 128,227.19 is: 192,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,771.85 : 476,651.60 = 128,227.19 : x
  2. Step 2: Convert to fraction form
    317,771.85/476,651.60 = 128,227.19/x
  3. Step 3: Cross multiply
    317,771.85x = 476,651.60 × 128,227.19
  4. Step 4: Simplify right side
    317,771.85x = 61,119,694,635.87
  5. Step 5: Solve for x
    x = 61,119,694,635.87/317,771.85
  6. Step 6: Final answer
    x = 192,338.29

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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.