Home / 287,826.80-431,351.40-192,786.80

Finding the Fourth Proportional to 287,826.80, 431,351.40 and 192,786.80

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Solution

The fourth proportional to 287,826.80, 431,351.40 and 192,786.80 is: 288,919.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,826.80 : 431,351.40 = 192,786.80 : x
  2. Step 2: Convert to fraction form
    287,826.80/431,351.40 = 192,786.80/x
  3. Step 3: Cross multiply
    287,826.80x = 431,351.40 × 192,786.80
  4. Step 4: Simplify right side
    287,826.80x = 83,158,856,081.52
  5. Step 5: Solve for x
    x = 83,158,856,081.52/287,826.80
  6. Step 6: Final answer
    x = 288,919.78

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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.