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Finding the Fourth Proportional to 291,288.52, 436,935.66 and 91,604.44

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Solution

The fourth proportional to 291,288.52, 436,935.66 and 91,604.44 is: 137,407.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,288.52 : 436,935.66 = 91,604.44 : x
  2. Step 2: Convert to fraction form
    291,288.52/436,935.66 = 91,604.44/x
  3. Step 3: Cross multiply
    291,288.52x = 436,935.66 × 91,604.44
  4. Step 4: Simplify right side
    291,288.52x = 40,025,246,450.33
  5. Step 5: Solve for x
    x = 40,025,246,450.33/291,288.52
  6. Step 6: Final answer
    x = 137,407.57

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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.