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Finding the Fourth Proportional to 299,666.20, 449,268.90 and 168,338.20

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Solution

The fourth proportional to 299,666.20, 449,268.90 and 168,338.20 is: 252,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,666.20 : 449,268.90 = 168,338.20 : x
  2. Step 2: Convert to fraction form
    299,666.20/449,268.90 = 168,338.20/x
  3. Step 3: Cross multiply
    299,666.20x = 449,268.90 × 168,338.20
  4. Step 4: Simplify right side
    299,666.20x = 75,629,117,941.98
  5. Step 5: Solve for x
    x = 75,629,117,941.98/299,666.20
  6. Step 6: Final answer
    x = 252,377.87

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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.