Home / 278,337.27-383,851.83-235,406.78

Finding the Fourth Proportional to 278,337.27, 383,851.83 and 235,406.78

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Solution

The fourth proportional to 278,337.27, 383,851.83 and 235,406.78 is: 324,646.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,337.27 : 383,851.83 = 235,406.78 : x
  2. Step 2: Convert to fraction form
    278,337.27/383,851.83 = 235,406.78/x
  3. Step 3: Cross multiply
    278,337.27x = 383,851.83 × 235,406.78
  4. Step 4: Simplify right side
    278,337.27x = 90,361,323,297.41
  5. Step 5: Solve for x
    x = 90,361,323,297.41/278,337.27
  6. Step 6: Final answer
    x = 324,646.87

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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.