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Finding the Fourth Proportional to 339,749.20, 509,278.20 and 199,435.60

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Solution

The fourth proportional to 339,749.20, 509,278.20 and 199,435.60 is: 298,950.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,749.20 : 509,278.20 = 199,435.60 : x
  2. Step 2: Convert to fraction form
    339,749.20/509,278.20 = 199,435.60/x
  3. Step 3: Cross multiply
    339,749.20x = 509,278.20 × 199,435.60
  4. Step 4: Simplify right side
    339,749.20x = 101,568,203,383.92
  5. Step 5: Solve for x
    x = 101,568,203,383.92/339,749.20
  6. Step 6: Final answer
    x = 298,950.53

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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.