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Finding the Fourth Proportional to 279,951.21, 419,803.29 and 80,226.27

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Solution

The fourth proportional to 279,951.21, 419,803.29 and 80,226.27 is: 120,304.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,951.21 : 419,803.29 = 80,226.27 : x
  2. Step 2: Convert to fraction form
    279,951.21/419,803.29 = 80,226.27/x
  3. Step 3: Cross multiply
    279,951.21x = 419,803.29 × 80,226.27
  4. Step 4: Simplify right side
    279,951.21x = 33,679,252,090.43
  5. Step 5: Solve for x
    x = 33,679,252,090.43/279,951.21
  6. Step 6: Final answer
    x = 120,304.01

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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.