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Finding the Fourth Proportional to 299,728.08, 449,612.64 and 100,040.40

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Solution

The fourth proportional to 299,728.08, 449,612.64 and 100,040.40 is: 150,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,728.08 : 449,612.64 = 100,040.40 : x
  2. Step 2: Convert to fraction form
    299,728.08/449,612.64 = 100,040.40/x
  3. Step 3: Cross multiply
    299,728.08x = 449,612.64 × 100,040.40
  4. Step 4: Simplify right side
    299,728.08x = 44,979,428,350.66
  5. Step 5: Solve for x
    x = 44,979,428,350.66/299,728.08
  6. Step 6: Final answer
    x = 150,067.45

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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.