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Finding the Fourth Proportional to 202,099.80, 303,805.80 and 143,342.40

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Solution

The fourth proportional to 202,099.80, 303,805.80 and 143,342.40 is: 215,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,099.80 : 303,805.80 = 143,342.40 : x
  2. Step 2: Convert to fraction form
    202,099.80/303,805.80 = 143,342.40/x
  3. Step 3: Cross multiply
    202,099.80x = 303,805.80 × 143,342.40
  4. Step 4: Simplify right side
    202,099.80x = 43,548,252,505.92
  5. Step 5: Solve for x
    x = 43,548,252,505.92/202,099.80
  6. Step 6: Final answer
    x = 215,478.95

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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.