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Finding the Fourth Proportional to 263,485.71, 395,291.54 and 85,993.04

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Solution

The fourth proportional to 263,485.71, 395,291.54 and 85,993.04 is: 129,010.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,485.71 : 395,291.54 = 85,993.04 : x
  2. Step 2: Convert to fraction form
    263,485.71/395,291.54 = 85,993.04/x
  3. Step 3: Cross multiply
    263,485.71x = 395,291.54 × 85,993.04
  4. Step 4: Simplify right side
    263,485.71x = 33,992,322,414.09
  5. Step 5: Solve for x
    x = 33,992,322,414.09/263,485.71
  6. Step 6: Final answer
    x = 129,010.12

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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.