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Finding the Fourth Proportional to 275,334.40, 412,310.40 and 262,892.80

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Solution

The fourth proportional to 275,334.40, 412,310.40 and 262,892.80 is: 393,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,334.40 : 412,310.40 = 262,892.80 : x
  2. Step 2: Convert to fraction form
    275,334.40/412,310.40 = 262,892.80/x
  3. Step 3: Cross multiply
    275,334.40x = 412,310.40 × 262,892.80
  4. Step 4: Simplify right side
    275,334.40x = 108,393,435,525.12
  5. Step 5: Solve for x
    x = 108,393,435,525.12/275,334.40
  6. Step 6: Final answer
    x = 393,679.23

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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.