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Finding the Fourth Proportional to 300,067.60, 449,640.60 and 260,438.80

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Solution

The fourth proportional to 300,067.60, 449,640.60 and 260,438.80 is: 390,258.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,067.60 : 449,640.60 = 260,438.80 : x
  2. Step 2: Convert to fraction form
    300,067.60/449,640.60 = 260,438.80/x
  3. Step 3: Cross multiply
    300,067.60x = 449,640.60 × 260,438.80
  4. Step 4: Simplify right side
    300,067.60x = 117,103,858,295.28
  5. Step 5: Solve for x
    x = 117,103,858,295.28/300,067.60
  6. Step 6: Final answer
    x = 390,258.26

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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.