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Finding the Fourth Proportional to 449,268, 619,919.37 and 258,245.70

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Solution

The fourth proportional to 449,268, 619,919.37 and 258,245.70 is: 356,338.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,268 : 619,919.37 = 258,245.70 : x
  2. Step 2: Convert to fraction form
    449,268/619,919.37 = 258,245.70/x
  3. Step 3: Cross multiply
    449,268x = 619,919.37 × 258,245.70
  4. Step 4: Simplify right side
    449,268x = 160,091,511,649.21
  5. Step 5: Solve for x
    x = 160,091,511,649.21/449,268
  6. Step 6: Final answer
    x = 356,338.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.