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Finding the Fourth Proportional to 330,844.80, 496,267.20 and 279,523.20

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Solution

The fourth proportional to 330,844.80, 496,267.20 and 279,523.20 is: 419,284.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,844.80 : 496,267.20 = 279,523.20 : x
  2. Step 2: Convert to fraction form
    330,844.80/496,267.20 = 279,523.20/x
  3. Step 3: Cross multiply
    330,844.80x = 496,267.20 × 279,523.20
  4. Step 4: Simplify right side
    330,844.80x = 138,718,195,799.04
  5. Step 5: Solve for x
    x = 138,718,195,799.04/330,844.80
  6. Step 6: Final answer
    x = 419,284.80

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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.