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Finding the Fourth Proportional to 218,573.48, 327,831.50 and 68,814.55

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Solution

The fourth proportional to 218,573.48, 327,831.50 and 68,814.55 is: 103,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,573.48 : 327,831.50 = 68,814.55 : x
  2. Step 2: Convert to fraction form
    218,573.48/327,831.50 = 68,814.55/x
  3. Step 3: Cross multiply
    218,573.48x = 327,831.50 × 68,814.55
  4. Step 4: Simplify right side
    218,573.48x = 22,559,577,148.33
  5. Step 5: Solve for x
    x = 22,559,577,148.33/218,573.48
  6. Step 6: Final answer
    x = 103,212.78

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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.