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Finding the Fourth Proportional to 299,115.70, 448,519.65 and 88,726.30

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Solution

The fourth proportional to 299,115.70, 448,519.65 and 88,726.30 is: 133,043.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,115.70 : 448,519.65 = 88,726.30 : x
  2. Step 2: Convert to fraction form
    299,115.70/448,519.65 = 88,726.30/x
  3. Step 3: Cross multiply
    299,115.70x = 448,519.65 × 88,726.30
  4. Step 4: Simplify right side
    299,115.70x = 39,795,489,021.80
  5. Step 5: Solve for x
    x = 39,795,489,021.80/299,115.70
  6. Step 6: Final answer
    x = 133,043.80

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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.