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Finding the Fourth Proportional to 263,268.62, 394,827.60 and 85,791.14

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Solution

The fourth proportional to 263,268.62, 394,827.60 and 85,791.14 is: 128,662.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,268.62 : 394,827.60 = 85,791.14 : x
  2. Step 2: Convert to fraction form
    263,268.62/394,827.60 = 85,791.14/x
  3. Step 3: Cross multiply
    263,268.62x = 394,827.60 × 85,791.14
  4. Step 4: Simplify right side
    263,268.62x = 33,872,709,478.51
  5. Step 5: Solve for x
    x = 33,872,709,478.51/263,268.62
  6. Step 6: Final answer
    x = 128,662.16

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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.