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Finding the Fourth Proportional to 263,707.21, 395,571.74 and 76,718.71

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Solution

The fourth proportional to 263,707.21, 395,571.74 and 76,718.71 is: 115,081.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,707.21 : 395,571.74 = 76,718.71 : x
  2. Step 2: Convert to fraction form
    263,707.21/395,571.74 = 76,718.71/x
  3. Step 3: Cross multiply
    263,707.21x = 395,571.74 × 76,718.71
  4. Step 4: Simplify right side
    263,707.21x = 30,347,753,716.13
  5. Step 5: Solve for x
    x = 30,347,753,716.13/263,707.21
  6. Step 6: Final answer
    x = 115,081.24

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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.