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Finding the Fourth Proportional to 299,789.80, 449,627.10 and 89,434.60

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Solution

The fourth proportional to 299,789.80, 449,627.10 and 89,434.60 is: 134,134.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,789.80 : 449,627.10 = 89,434.60 : x
  2. Step 2: Convert to fraction form
    299,789.80/449,627.10 = 89,434.60/x
  3. Step 3: Cross multiply
    299,789.80x = 449,627.10 × 89,434.60
  4. Step 4: Simplify right side
    299,789.80x = 40,212,219,837.66
  5. Step 5: Solve for x
    x = 40,212,219,837.66/299,789.80
  6. Step 6: Final answer
    x = 134,134.72

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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.