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Finding the Fourth Proportional to 290,147.94, 400,306.05 and 188,300.97

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Solution

The fourth proportional to 290,147.94, 400,306.05 and 188,300.97 is: 259,791.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,147.94 : 400,306.05 = 188,300.97 : x
  2. Step 2: Convert to fraction form
    290,147.94/400,306.05 = 188,300.97/x
  3. Step 3: Cross multiply
    290,147.94x = 400,306.05 × 188,300.97
  4. Step 4: Simplify right side
    290,147.94x = 75,378,017,511.87
  5. Step 5: Solve for x
    x = 75,378,017,511.87/290,147.94
  6. Step 6: Final answer
    x = 259,791.67

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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.