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Finding the Fourth Proportional to 299,674.60, 449,511.90 and 285,850.60

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Solution

The fourth proportional to 299,674.60, 449,511.90 and 285,850.60 is: 428,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,674.60 : 449,511.90 = 285,850.60 : x
  2. Step 2: Convert to fraction form
    299,674.60/449,511.90 = 285,850.60/x
  3. Step 3: Cross multiply
    299,674.60x = 449,511.90 × 285,850.60
  4. Step 4: Simplify right side
    299,674.60x = 128,493,246,322.14
  5. Step 5: Solve for x
    x = 128,493,246,322.14/299,674.60
  6. Step 6: Final answer
    x = 428,775.90

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1.5x scale

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.