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Finding the Fourth Proportional to 300,146.31, 449,834.31 and 131,620.95

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Solution

The fourth proportional to 300,146.31, 449,834.31 and 131,620.95 is: 197,262.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,146.31 : 449,834.31 = 131,620.95 : x
  2. Step 2: Convert to fraction form
    300,146.31/449,834.31 = 131,620.95/x
  3. Step 3: Cross multiply
    300,146.31x = 449,834.31 × 131,620.95
  4. Step 4: Simplify right side
    300,146.31x = 59,207,619,224.79
  5. Step 5: Solve for x
    x = 59,207,619,224.79/300,146.31
  6. Step 6: Final answer
    x = 197,262.53

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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.