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Finding the Fourth Proportional to 311,243.85, 466,874.82 and 121,696.56

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Solution

The fourth proportional to 311,243.85, 466,874.82 and 121,696.56 is: 182,548.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,243.85 : 466,874.82 = 121,696.56 : x
  2. Step 2: Convert to fraction form
    311,243.85/466,874.82 = 121,696.56/x
  3. Step 3: Cross multiply
    311,243.85x = 466,874.82 × 121,696.56
  4. Step 4: Simplify right side
    311,243.85x = 56,817,059,544.62
  5. Step 5: Solve for x
    x = 56,817,059,544.62/311,243.85
  6. Step 6: Final answer
    x = 182,548.38

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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.