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Finding the Fourth Proportional to 323,806.34, 485,817.08 and 143,866.73

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Solution

The fourth proportional to 323,806.34, 485,817.08 and 143,866.73 is: 215,847.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,806.34 : 485,817.08 = 143,866.73 : x
  2. Step 2: Convert to fraction form
    323,806.34/485,817.08 = 143,866.73/x
  3. Step 3: Cross multiply
    323,806.34x = 485,817.08 × 143,866.73
  4. Step 4: Simplify right side
    323,806.34x = 69,892,915,172.96
  5. Step 5: Solve for x
    x = 69,892,915,172.96/323,806.34
  6. Step 6: Final answer
    x = 215,847.89

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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.