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Finding the Fourth Proportional to 449,919.80, 675,138.90 and 169,638.20

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Solution

The fourth proportional to 449,919.80, 675,138.90 and 169,638.20 is: 254,555.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,919.80 : 675,138.90 = 169,638.20 : x
  2. Step 2: Convert to fraction form
    449,919.80/675,138.90 = 169,638.20/x
  3. Step 3: Cross multiply
    449,919.80x = 675,138.90 × 169,638.20
  4. Step 4: Simplify right side
    449,919.80x = 114,529,347,745.98
  5. Step 5: Solve for x
    x = 114,529,347,745.98/449,919.80
  6. Step 6: Final answer
    x = 254,555.03

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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.