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Finding the Fourth Proportional to 299,471.45, 449,205.35 and 74,830.70

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Solution

The fourth proportional to 299,471.45, 449,205.35 and 74,830.70 is: 112,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,471.45 : 449,205.35 = 74,830.70 : x
  2. Step 2: Convert to fraction form
    299,471.45/449,205.35 = 74,830.70/x
  3. Step 3: Cross multiply
    299,471.45x = 449,205.35 × 74,830.70
  4. Step 4: Simplify right side
    299,471.45x = 33,614,351,533.10
  5. Step 5: Solve for x
    x = 33,614,351,533.10/299,471.45
  6. Step 6: Final answer
    x = 112,245.60

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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.