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Finding the Fourth Proportional to 809,791.80, 1,214,745.30 and 248,825.40

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Solution

The fourth proportional to 809,791.80, 1,214,745.30 and 248,825.40 is: 373,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,791.80 : 1,214,745.30 = 248,825.40 : x
  2. Step 2: Convert to fraction form
    809,791.80/1,214,745.30 = 248,825.40/x
  3. Step 3: Cross multiply
    809,791.80x = 1,214,745.30 × 248,825.40
  4. Step 4: Simplify right side
    809,791.80x = 302,259,485,170.62
  5. Step 5: Solve for x
    x = 302,259,485,170.62/809,791.80
  6. Step 6: Final answer
    x = 373,255.80

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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.