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Finding the Fourth Proportional to 299,888.39, 449,855.78 and 100,209.47

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Solution

The fourth proportional to 299,888.39, 449,855.78 and 100,209.47 is: 150,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,888.39 : 449,855.78 = 100,209.47 : x
  2. Step 2: Convert to fraction form
    299,888.39/449,855.78 = 100,209.47/x
  3. Step 3: Cross multiply
    299,888.39x = 449,855.78 × 100,209.47
  4. Step 4: Simplify right side
    299,888.39x = 45,079,806,539.91
  5. Step 5: Solve for x
    x = 45,079,806,539.91/299,888.39
  6. Step 6: Final answer
    x = 150,321.95

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1.5x scale

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.