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Finding the Fourth Proportional to 291,191.76, 436,739.04 and 80,850.96

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Solution

The fourth proportional to 291,191.76, 436,739.04 and 80,850.96 is: 121,262.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,191.76 : 436,739.04 = 80,850.96 : x
  2. Step 2: Convert to fraction form
    291,191.76/436,739.04 = 80,850.96/x
  3. Step 3: Cross multiply
    291,191.76x = 436,739.04 × 80,850.96
  4. Step 4: Simplify right side
    291,191.76x = 35,310,770,653.48
  5. Step 5: Solve for x
    x = 35,310,770,653.48/291,191.76
  6. Step 6: Final answer
    x = 121,262.95

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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.