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Finding the Fourth Proportional to 299,587.60, 449,162.70 and 122,003.20

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Solution

The fourth proportional to 299,587.60, 449,162.70 and 122,003.20 is: 182,915.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,587.60 : 449,162.70 = 122,003.20 : x
  2. Step 2: Convert to fraction form
    299,587.60/449,162.70 = 122,003.20/x
  3. Step 3: Cross multiply
    299,587.60x = 449,162.70 × 122,003.20
  4. Step 4: Simplify right side
    299,587.60x = 54,799,286,720.64
  5. Step 5: Solve for x
    x = 54,799,286,720.64/299,587.60
  6. Step 6: Final answer
    x = 182,915.74

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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.