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Finding the Fourth Proportional to 275,121.60, 411,807.60 and 196,389.60

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Solution

The fourth proportional to 275,121.60, 411,807.60 and 196,389.60 is: 293,959.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,121.60 : 411,807.60 = 196,389.60 : x
  2. Step 2: Convert to fraction form
    275,121.60/411,807.60 = 196,389.60/x
  3. Step 3: Cross multiply
    275,121.60x = 411,807.60 × 196,389.60
  4. Step 4: Simplify right side
    275,121.60x = 80,874,729,840.96
  5. Step 5: Solve for x
    x = 80,874,729,840.96/275,121.60
  6. Step 6: Final answer
    x = 293,959.94

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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.