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Finding the Fourth Proportional to 299,782.20, 449,732.34 and 89,415.48

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Solution

The fourth proportional to 299,782.20, 449,732.34 and 89,415.48 is: 134,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,782.20 : 449,732.34 = 89,415.48 : x
  2. Step 2: Convert to fraction form
    299,782.20/449,732.34 = 89,415.48/x
  3. Step 3: Cross multiply
    299,782.20x = 449,732.34 × 89,415.48
  4. Step 4: Simplify right side
    299,782.20x = 40,213,033,052.62
  5. Step 5: Solve for x
    x = 40,213,033,052.62/299,782.20
  6. Step 6: Final answer
    x = 134,140.83

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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.