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Finding the Fourth Proportional to 220,808.55, 330,708.43 and 131,879.67

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Solution

The fourth proportional to 220,808.55, 330,708.43 and 131,879.67 is: 197,518.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,808.55 : 330,708.43 = 131,879.67 : x
  2. Step 2: Convert to fraction form
    220,808.55/330,708.43 = 131,879.67/x
  3. Step 3: Cross multiply
    220,808.55x = 330,708.43 × 131,879.67
  4. Step 4: Simplify right side
    220,808.55x = 43,613,718,614.62
  5. Step 5: Solve for x
    x = 43,613,718,614.62/220,808.55
  6. Step 6: Final answer
    x = 197,518.25

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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.