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Finding the Fourth Proportional to 275,169.20, 411,976.20 and 247,175.60

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Solution

The fourth proportional to 275,169.20, 411,976.20 and 247,175.60 is: 370,064.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,169.20 : 411,976.20 = 247,175.60 : x
  2. Step 2: Convert to fraction form
    275,169.20/411,976.20 = 247,175.60/x
  3. Step 3: Cross multiply
    275,169.20x = 411,976.20 × 247,175.60
  4. Step 4: Simplify right side
    275,169.20x = 101,830,464,420.72
  5. Step 5: Solve for x
    x = 101,830,464,420.72/275,169.20
  6. Step 6: Final answer
    x = 370,064.91

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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.