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Finding the Fourth Proportional to 310,835.58, 428,850.36 and 188,282.58

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Solution

The fourth proportional to 310,835.58, 428,850.36 and 188,282.58 is: 259,767.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,835.58 : 428,850.36 = 188,282.58 : x
  2. Step 2: Convert to fraction form
    310,835.58/428,850.36 = 188,282.58/x
  3. Step 3: Cross multiply
    310,835.58x = 428,850.36 × 188,282.58
  4. Step 4: Simplify right side
    310,835.58x = 80,745,052,214.73
  5. Step 5: Solve for x
    x = 80,745,052,214.73/310,835.58
  6. Step 6: Final answer
    x = 259,767.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.