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Finding the Fourth Proportional to 291,379.20, 437,241.60 and 191,824.80

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Solution

The fourth proportional to 291,379.20, 437,241.60 and 191,824.80 is: 287,850.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,379.20 : 437,241.60 = 191,824.80 : x
  2. Step 2: Convert to fraction form
    291,379.20/437,241.60 = 191,824.80/x
  3. Step 3: Cross multiply
    291,379.20x = 437,241.60 × 191,824.80
  4. Step 4: Simplify right side
    291,379.20x = 83,873,782,471.68
  5. Step 5: Solve for x
    x = 83,873,782,471.68/291,379.20
  6. Step 6: Final answer
    x = 287,850.96

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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.