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Finding the Fourth Proportional to 279,720.80, 419,087.10 and 270,470.60

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Solution

The fourth proportional to 279,720.80, 419,087.10 and 270,470.60 is: 405,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,720.80 : 419,087.10 = 270,470.60 : x
  2. Step 2: Convert to fraction form
    279,720.80/419,087.10 = 270,470.60/x
  3. Step 3: Cross multiply
    279,720.80x = 419,087.10 × 270,470.60
  4. Step 4: Simplify right side
    279,720.80x = 113,350,739,389.26
  5. Step 5: Solve for x
    x = 113,350,739,389.26/279,720.80
  6. Step 6: Final answer
    x = 405,228.14

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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.