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Finding the Fourth Proportional to 449,847.20, 674,338.80 and 260,112.80

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Solution

The fourth proportional to 449,847.20, 674,338.80 and 260,112.80 is: 389,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,847.20 : 674,338.80 = 260,112.80 : x
  2. Step 2: Convert to fraction form
    449,847.20/674,338.80 = 260,112.80/x
  3. Step 3: Cross multiply
    449,847.20x = 674,338.80 × 260,112.80
  4. Step 4: Simplify right side
    449,847.20x = 175,404,153,416.64
  5. Step 5: Solve for x
    x = 175,404,153,416.64/449,847.20
  6. Step 6: Final answer
    x = 389,919.41

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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.