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Finding the Fourth Proportional to 279,576.95, 419,379.26 and 79,926.74

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Solution

The fourth proportional to 279,576.95, 419,379.26 and 79,926.74 is: 119,894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,576.95 : 419,379.26 = 79,926.74 : x
  2. Step 2: Convert to fraction form
    279,576.95/419,379.26 = 79,926.74/x
  3. Step 3: Cross multiply
    279,576.95x = 419,379.26 × 79,926.74
  4. Step 4: Simplify right side
    279,576.95x = 33,519,616,675.78
  5. Step 5: Solve for x
    x = 33,519,616,675.78/279,576.95
  6. Step 6: Final answer
    x = 119,894.07

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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.