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Finding the Fourth Proportional to 327,889.58, 491,831.64 and 91,231.58

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Solution

The fourth proportional to 327,889.58, 491,831.64 and 91,231.58 is: 136,846.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,889.58 : 491,831.64 = 91,231.58 : x
  2. Step 2: Convert to fraction form
    327,889.58/491,831.64 = 91,231.58/x
  3. Step 3: Cross multiply
    327,889.58x = 491,831.64 × 91,231.58
  4. Step 4: Simplify right side
    327,889.58x = 44,870,577,611.19
  5. Step 5: Solve for x
    x = 44,870,577,611.19/327,889.58
  6. Step 6: Final answer
    x = 136,846.61

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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.