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Finding the Fourth Proportional to 311,909.88, 468,072.42 and 169,790.94

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Solution

The fourth proportional to 311,909.88, 468,072.42 and 169,790.94 is: 254,799.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,909.88 : 468,072.42 = 169,790.94 : x
  2. Step 2: Convert to fraction form
    311,909.88/468,072.42 = 169,790.94/x
  3. Step 3: Cross multiply
    311,909.88x = 468,072.42 × 169,790.94
  4. Step 4: Simplify right side
    311,909.88x = 79,474,456,179.87
  5. Step 5: Solve for x
    x = 79,474,456,179.87/311,909.88
  6. Step 6: Final answer
    x = 254,799.42

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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.