Home / 263,269.12-394,828.35-85,791.64

Finding the Fourth Proportional to 263,269.12, 394,828.35 and 85,791.64

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Solution

The fourth proportional to 263,269.12, 394,828.35 and 85,791.64 is: 128,662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,269.12 : 394,828.35 = 85,791.64 : x
  2. Step 2: Convert to fraction form
    263,269.12/394,828.35 = 85,791.64/x
  3. Step 3: Cross multiply
    263,269.12x = 394,828.35 × 85,791.64
  4. Step 4: Simplify right side
    263,269.12x = 33,872,971,664.99
  5. Step 5: Solve for x
    x = 33,872,971,664.99/263,269.12
  6. Step 6: Final answer
    x = 128,662.91

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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.