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Finding the Fourth Proportional to 279,310.68, 419,031.63 and 79,633.94

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Solution

The fourth proportional to 279,310.68, 419,031.63 and 79,633.94 is: 119,469.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,310.68 : 419,031.63 = 79,633.94 : x
  2. Step 2: Convert to fraction form
    279,310.68/419,031.63 = 79,633.94/x
  3. Step 3: Cross multiply
    279,310.68x = 419,031.63 × 79,633.94
  4. Step 4: Simplify right side
    279,310.68x = 33,369,137,586.36
  5. Step 5: Solve for x
    x = 33,369,137,586.36/279,310.68
  6. Step 6: Final answer
    x = 119,469.61

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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.