Home / 218,640.29-328,135.37-113,489.33

Finding the Fourth Proportional to 218,640.29, 328,135.37 and 113,489.33

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Solution

The fourth proportional to 218,640.29, 328,135.37 and 113,489.33 is: 170,324.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,640.29 : 328,135.37 = 113,489.33 : x
  2. Step 2: Convert to fraction form
    218,640.29/328,135.37 = 113,489.33/x
  3. Step 3: Cross multiply
    218,640.29x = 328,135.37 × 113,489.33
  4. Step 4: Simplify right side
    218,640.29x = 37,239,861,082.48
  5. Step 5: Solve for x
    x = 37,239,861,082.48/218,640.29
  6. Step 6: Final answer
    x = 170,324.79

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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.