Home / 290,376.26-400,813.20-188,221.49

Finding the Fourth Proportional to 290,376.26, 400,813.20 and 188,221.49

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Solution

The fourth proportional to 290,376.26, 400,813.20 and 188,221.49 is: 259,806.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,376.26 : 400,813.20 = 188,221.49 : x
  2. Step 2: Convert to fraction form
    290,376.26/400,813.20 = 188,221.49/x
  3. Step 3: Cross multiply
    290,376.26x = 400,813.20 × 188,221.49
  4. Step 4: Simplify right side
    290,376.26x = 75,441,655,711.60
  5. Step 5: Solve for x
    x = 75,441,655,711.60/290,376.26
  6. Step 6: Final answer
    x = 259,806.56

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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.