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Finding the Fourth Proportional to 299,968.80, 449,960.40 and 89,613.60

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Solution

The fourth proportional to 299,968.80, 449,960.40 and 89,613.60 is: 134,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,968.80 : 449,960.40 = 89,613.60 : x
  2. Step 2: Convert to fraction form
    299,968.80/449,960.40 = 89,613.60/x
  3. Step 3: Cross multiply
    299,968.80x = 449,960.40 × 89,613.60
  4. Step 4: Simplify right side
    299,968.80x = 40,322,571,301.44
  5. Step 5: Solve for x
    x = 40,322,571,301.44/299,968.80
  6. Step 6: Final answer
    x = 134,422.55

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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.