Home / 218,033.60-326,831.70-99,789.80

Finding the Fourth Proportional to 218,033.60, 326,831.70 and 99,789.80

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Solution

The fourth proportional to 218,033.60, 326,831.70 and 99,789.80 is: 149,584.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,033.60 : 326,831.70 = 99,789.80 : x
  2. Step 2: Convert to fraction form
    218,033.60/326,831.70 = 99,789.80/x
  3. Step 3: Cross multiply
    218,033.60x = 326,831.70 × 99,789.80
  4. Step 4: Simplify right side
    218,033.60x = 32,614,469,976.66
  5. Step 5: Solve for x
    x = 32,614,469,976.66/218,033.60
  6. Step 6: Final answer
    x = 149,584.61

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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.