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Finding the Fourth Proportional to 329,806.56, 494,711.01 and 80,488.56

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Solution

The fourth proportional to 329,806.56, 494,711.01 and 80,488.56 is: 120,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,806.56 : 494,711.01 = 80,488.56 : x
  2. Step 2: Convert to fraction form
    329,806.56/494,711.01 = 80,488.56/x
  3. Step 3: Cross multiply
    329,806.56x = 494,711.01 × 80,488.56
  4. Step 4: Simplify right side
    329,806.56x = 39,818,576,811.05
  5. Step 5: Solve for x
    x = 39,818,576,811.05/329,806.56
  6. Step 6: Final answer
    x = 120,733.13

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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.