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Finding the Fourth Proportional to 491,381.36, 736,633.26 and 191,791.96

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Solution

The fourth proportional to 491,381.36, 736,633.26 and 191,791.96 is: 287,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,381.36 : 736,633.26 = 191,791.96 : x
  2. Step 2: Convert to fraction form
    491,381.36/736,633.26 = 191,791.96/x
  3. Step 3: Cross multiply
    491,381.36x = 736,633.26 × 191,791.96
  4. Step 4: Simplify right side
    491,381.36x = 141,280,336,736.59
  5. Step 5: Solve for x
    x = 141,280,336,736.59/491,381.36
  6. Step 6: Final answer
    x = 287,516.68

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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.