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Finding the Fourth Proportional to 199,600.30, 299,436.90 and 81,283.60

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Solution

The fourth proportional to 199,600.30, 299,436.90 and 81,283.60 is: 121,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,600.30 : 299,436.90 = 81,283.60 : x
  2. Step 2: Convert to fraction form
    199,600.30/299,436.90 = 81,283.60/x
  3. Step 3: Cross multiply
    199,600.30x = 299,436.90 × 81,283.60
  4. Step 4: Simplify right side
    199,600.30x = 24,339,309,204.84
  5. Step 5: Solve for x
    x = 24,339,309,204.84/199,600.30
  6. Step 6: Final answer
    x = 121,940.24

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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.