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Finding the Fourth Proportional to 312,998.70, 469,380.09 and 113,269.74

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Solution

The fourth proportional to 312,998.70, 469,380.09 and 113,269.74 is: 169,861.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,998.70 : 469,380.09 = 113,269.74 : x
  2. Step 2: Convert to fraction form
    312,998.70/469,380.09 = 113,269.74/x
  3. Step 3: Cross multiply
    312,998.70x = 469,380.09 × 113,269.74
  4. Step 4: Simplify right side
    312,998.70x = 53,166,560,755.48
  5. Step 5: Solve for x
    x = 53,166,560,755.48/312,998.70
  6. Step 6: Final answer
    x = 169,861.92

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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.