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Finding the Fourth Proportional to 299,424.20, 449,136.30 and 89,034.80

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Solution

The fourth proportional to 299,424.20, 449,136.30 and 89,034.80 is: 133,552.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,424.20 : 449,136.30 = 89,034.80 : x
  2. Step 2: Convert to fraction form
    299,424.20/449,136.30 = 89,034.80/x
  3. Step 3: Cross multiply
    299,424.20x = 449,136.30 × 89,034.80
  4. Step 4: Simplify right side
    299,424.20x = 39,988,760,643.24
  5. Step 5: Solve for x
    x = 39,988,760,643.24/299,424.20
  6. Step 6: Final answer
    x = 133,552.20

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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.