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Finding the Fourth Proportional to 299,378.40, 449,067.60 and 271,730.40

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Solution

The fourth proportional to 299,378.40, 449,067.60 and 271,730.40 is: 407,595.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,378.40 : 449,067.60 = 271,730.40 : x
  2. Step 2: Convert to fraction form
    299,378.40/449,067.60 = 271,730.40/x
  3. Step 3: Cross multiply
    299,378.40x = 449,067.60 × 271,730.40
  4. Step 4: Simplify right side
    299,378.40x = 122,025,318,575.04
  5. Step 5: Solve for x
    x = 122,025,318,575.04/299,378.40
  6. Step 6: Final answer
    x = 407,595.60

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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.