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Finding the Fourth Proportional to 299,432.80, 449,149.20 and 149,696.20

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Solution

The fourth proportional to 299,432.80, 449,149.20 and 149,696.20 is: 224,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,432.80 : 449,149.20 = 149,696.20 : x
  2. Step 2: Convert to fraction form
    299,432.80/449,149.20 = 149,696.20/x
  3. Step 3: Cross multiply
    299,432.80x = 449,149.20 × 149,696.20
  4. Step 4: Simplify right side
    299,432.80x = 67,235,928,473.04
  5. Step 5: Solve for x
    x = 67,235,928,473.04/299,432.80
  6. Step 6: Final answer
    x = 224,544.30

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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.