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Finding the Fourth Proportional to 305,336.31, 458,286.35 and 220,035.75

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Solution

The fourth proportional to 305,336.31, 458,286.35 and 220,035.75 is: 330,256.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,336.31 : 458,286.35 = 220,035.75 : x
  2. Step 2: Convert to fraction form
    305,336.31/458,286.35 = 220,035.75/x
  3. Step 3: Cross multiply
    305,336.31x = 458,286.35 × 220,035.75
  4. Step 4: Simplify right side
    305,336.31x = 100,839,379,636.83
  5. Step 5: Solve for x
    x = 100,839,379,636.83/305,336.31
  6. Step 6: Final answer
    x = 330,256.76

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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.