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Finding the Fourth Proportional to 279,785.94, 419,327.77 and 220,387.02

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Solution

The fourth proportional to 279,785.94, 419,327.77 and 220,387.02 is: 330,303.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,785.94 : 419,327.77 = 220,387.02 : x
  2. Step 2: Convert to fraction form
    279,785.94/419,327.77 = 220,387.02/x
  3. Step 3: Cross multiply
    279,785.94x = 419,327.77 × 220,387.02
  4. Step 4: Simplify right side
    279,785.94x = 92,414,397,633.55
  5. Step 5: Solve for x
    x = 92,414,397,633.55/279,785.94
  6. Step 6: Final answer
    x = 330,303.94

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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.