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Finding the Fourth Proportional to 279,190.80, 418,292.10 and 269,940.60

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Solution

The fourth proportional to 279,190.80, 418,292.10 and 269,940.60 is: 404,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,190.80 : 418,292.10 = 269,940.60 : x
  2. Step 2: Convert to fraction form
    279,190.80/418,292.10 = 269,940.60/x
  3. Step 3: Cross multiply
    279,190.80x = 418,292.10 × 269,940.60
  4. Step 4: Simplify right side
    279,190.80x = 112,914,020,449.26
  5. Step 5: Solve for x
    x = 112,914,020,449.26/279,190.80
  6. Step 6: Final answer
    x = 404,433.17

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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.