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Finding the Fourth Proportional to 216,231.39, 298,399.22 and 120,738.03

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Solution

The fourth proportional to 216,231.39, 298,399.22 and 120,738.03 is: 166,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,231.39 : 298,399.22 = 120,738.03 : x
  2. Step 2: Convert to fraction form
    216,231.39/298,399.22 = 120,738.03/x
  3. Step 3: Cross multiply
    216,231.39x = 298,399.22 × 120,738.03
  4. Step 4: Simplify right side
    216,231.39x = 36,028,133,372.65
  5. Step 5: Solve for x
    x = 36,028,133,372.65/216,231.39
  6. Step 6: Final answer
    x = 166,618.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.