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Finding the Fourth Proportional to 449,912.80, 675,128.40 and 169,631.20

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Solution

The fourth proportional to 449,912.80, 675,128.40 and 169,631.20 is: 254,544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,912.80 : 675,128.40 = 169,631.20 : x
  2. Step 2: Convert to fraction form
    449,912.80/675,128.40 = 169,631.20/x
  3. Step 3: Cross multiply
    449,912.80x = 675,128.40 × 169,631.20
  4. Step 4: Simplify right side
    449,912.80x = 114,522,840,646.08
  5. Step 5: Solve for x
    x = 114,522,840,646.08/449,912.80
  6. Step 6: Final answer
    x = 254,544.53

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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.