Home / 263,268.12-394,826.85-85,790.64

Finding the Fourth Proportional to 263,268.12, 394,826.85 and 85,790.64

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Solution

The fourth proportional to 263,268.12, 394,826.85 and 85,790.64 is: 128,661.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,268.12 : 394,826.85 = 85,790.64 : x
  2. Step 2: Convert to fraction form
    263,268.12/394,826.85 = 85,790.64/x
  3. Step 3: Cross multiply
    263,268.12x = 394,826.85 × 85,790.64
  4. Step 4: Simplify right side
    263,268.12x = 33,872,447,169.10
  5. Step 5: Solve for x
    x = 33,872,447,169.10/263,268.12
  6. Step 6: Final answer
    x = 128,661.41

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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.