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Finding the Fourth Proportional to 202,414.60, 303,816.30 and 102,687.40

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Solution

The fourth proportional to 202,414.60, 303,816.30 and 102,687.40 is: 154,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,414.60 : 303,816.30 = 102,687.40 : x
  2. Step 2: Convert to fraction form
    202,414.60/303,816.30 = 102,687.40/x
  3. Step 3: Cross multiply
    202,414.60x = 303,816.30 × 102,687.40
  4. Step 4: Simplify right side
    202,414.60x = 31,198,105,924.62
  5. Step 5: Solve for x
    x = 31,198,105,924.62/202,414.60
  6. Step 6: Final answer
    x = 154,129.72

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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.