Home / 428,198.39-641,425.61-202,875.83

Finding the Fourth Proportional to 428,198.39, 641,425.61 and 202,875.83

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Solution

The fourth proportional to 428,198.39, 641,425.61 and 202,875.83 is: 303,900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,198.39 : 641,425.61 = 202,875.83 : x
  2. Step 2: Convert to fraction form
    428,198.39/641,425.61 = 202,875.83/x
  3. Step 3: Cross multiply
    428,198.39x = 641,425.61 × 202,875.83
  4. Step 4: Simplify right side
    428,198.39x = 130,129,753,012.01
  5. Step 5: Solve for x
    x = 130,129,753,012.01/428,198.39
  6. Step 6: Final answer
    x = 303,900.61

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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.