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Finding the Fourth Proportional to 279,826.80, 419,740.20 and 236,524.20

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Solution

The fourth proportional to 279,826.80, 419,740.20 and 236,524.20 is: 354,786.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,826.80 : 419,740.20 = 236,524.20 : x
  2. Step 2: Convert to fraction form
    279,826.80/419,740.20 = 236,524.20/x
  3. Step 3: Cross multiply
    279,826.80x = 419,740.20 × 236,524.20
  4. Step 4: Simplify right side
    279,826.80x = 99,278,715,012.84
  5. Step 5: Solve for x
    x = 99,278,715,012.84/279,826.80
  6. Step 6: Final answer
    x = 354,786.30

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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.