Home / 621,315.68-932,169.27-221,947.61

Finding the Fourth Proportional to 621,315.68, 932,169.27 and 221,947.61

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Solution

The fourth proportional to 621,315.68, 932,169.27 and 221,947.61 is: 332,991.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,315.68 : 932,169.27 = 221,947.61 : x
  2. Step 2: Convert to fraction form
    621,315.68/932,169.27 = 221,947.61/x
  3. Step 3: Cross multiply
    621,315.68x = 932,169.27 × 221,947.61
  4. Step 4: Simplify right side
    621,315.68x = 206,892,741,591.95
  5. Step 5: Solve for x
    x = 206,892,741,591.95/621,315.68
  6. Step 6: Final answer
    x = 332,991.34

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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.