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Finding the Fourth Proportional to 311,293.62, 465,884.91 and 191,425.86

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Solution

The fourth proportional to 311,293.62, 465,884.91 and 191,425.86 is: 286,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,293.62 : 465,884.91 = 191,425.86 : x
  2. Step 2: Convert to fraction form
    311,293.62/465,884.91 = 191,425.86/x
  3. Step 3: Cross multiply
    311,293.62x = 465,884.91 × 191,425.86
  4. Step 4: Simplify right side
    311,293.62x = 89,182,419,557.77
  5. Step 5: Solve for x
    x = 89,182,419,557.77/311,293.62
  6. Step 6: Final answer
    x = 286,489.71

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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.