Home / 262,890.80-394,336.20-199,905.20

Finding the Fourth Proportional to 262,890.80, 394,336.20 and 199,905.20

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Solution

The fourth proportional to 262,890.80, 394,336.20 and 199,905.20 is: 299,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,890.80 : 394,336.20 = 199,905.20 : x
  2. Step 2: Convert to fraction form
    262,890.80/394,336.20 = 199,905.20/x
  3. Step 3: Cross multiply
    262,890.80x = 394,336.20 × 199,905.20
  4. Step 4: Simplify right side
    262,890.80x = 78,829,856,928.24
  5. Step 5: Solve for x
    x = 78,829,856,928.24/262,890.80
  6. Step 6: Final answer
    x = 299,857.80

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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.