Home / 278,336.27-383,850.45-235,405.78

Finding the Fourth Proportional to 278,336.27, 383,850.45 and 235,405.78

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Solution

The fourth proportional to 278,336.27, 383,850.45 and 235,405.78 is: 324,645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,336.27 : 383,850.45 = 235,405.78 : x
  2. Step 2: Convert to fraction form
    278,336.27/383,850.45 = 235,405.78/x
  3. Step 3: Cross multiply
    278,336.27x = 383,850.45 × 235,405.78
  4. Step 4: Simplify right side
    278,336.27x = 90,360,613,625.97
  5. Step 5: Solve for x
    x = 90,360,613,625.97/278,336.27
  6. Step 6: Final answer
    x = 324,645.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.