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Finding the Fourth Proportional to 317,771.37, 476,650.85 and 128,226.69

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Solution

The fourth proportional to 317,771.37, 476,650.85 and 128,226.69 is: 192,337.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,771.37 : 476,650.85 = 128,226.69 : x
  2. Step 2: Convert to fraction form
    317,771.37/476,650.85 = 128,226.69/x
  3. Step 3: Cross multiply
    317,771.37x = 476,650.85 × 128,226.69
  4. Step 4: Simplify right side
    317,771.37x = 61,119,360,140.05
  5. Step 5: Solve for x
    x = 61,119,360,140.05/317,771.37
  6. Step 6: Final answer
    x = 192,337.53

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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.