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Finding the Fourth Proportional to 323,865.56, 485,147.74 and 161,269.76

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Solution

The fourth proportional to 323,865.56, 485,147.74 and 161,269.76 is: 241,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,865.56 : 485,147.74 = 161,269.76 : x
  2. Step 2: Convert to fraction form
    323,865.56/485,147.74 = 161,269.76/x
  3. Step 3: Cross multiply
    323,865.56x = 485,147.74 × 161,269.76
  4. Step 4: Simplify right side
    323,865.56x = 78,239,659,594.34
  5. Step 5: Solve for x
    x = 78,239,659,594.34/323,865.56
  6. Step 6: Final answer
    x = 241,580.67

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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.