Home / 293,785.91-405,548.57-198,421.78

Finding the Fourth Proportional to 293,785.91, 405,548.57 and 198,421.78

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Solution

The fourth proportional to 293,785.91, 405,548.57 and 198,421.78 is: 273,905.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,785.91 : 405,548.57 = 198,421.78 : x
  2. Step 2: Convert to fraction form
    293,785.91/405,548.57 = 198,421.78/x
  3. Step 3: Cross multiply
    293,785.91x = 405,548.57 × 198,421.78
  4. Step 4: Simplify right side
    293,785.91x = 80,469,669,135.85
  5. Step 5: Solve for x
    x = 80,469,669,135.85/293,785.91
  6. Step 6: Final answer
    x = 273,905.82

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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.