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Finding the Fourth Proportional to 329,124, 493,687.62 and 79,806

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Solution

The fourth proportional to 329,124, 493,687.62 and 79,806 is: 119,709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,124 : 493,687.62 = 79,806 : x
  2. Step 2: Convert to fraction form
    329,124/493,687.62 = 79,806/x
  3. Step 3: Cross multiply
    329,124x = 493,687.62 × 79,806
  4. Step 4: Simplify right side
    329,124x = 39,399,234,201.72
  5. Step 5: Solve for x
    x = 39,399,234,201.72/329,124
  6. Step 6: Final answer
    x = 119,709.39

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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.