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Finding the Fourth Proportional to 299,321.40, 449,055.90 and 88,959.30

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Solution

The fourth proportional to 299,321.40, 449,055.90 and 88,959.30 is: 133,460.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,321.40 : 449,055.90 = 88,959.30 : x
  2. Step 2: Convert to fraction form
    299,321.40/449,055.90 = 88,959.30/x
  3. Step 3: Cross multiply
    299,321.40x = 449,055.90 × 88,959.30
  4. Step 4: Simplify right side
    299,321.40x = 39,947,698,524.87
  5. Step 5: Solve for x
    x = 39,947,698,524.87/299,321.40
  6. Step 6: Final answer
    x = 133,460.88

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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.