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Finding the Fourth Proportional to 323,861.52, 485,806.84 and 99,205.58

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Solution

The fourth proportional to 323,861.52, 485,806.84 and 99,205.58 is: 148,812.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,861.52 : 485,806.84 = 99,205.58 : x
  2. Step 2: Convert to fraction form
    323,861.52/485,806.84 = 99,205.58/x
  3. Step 3: Cross multiply
    323,861.52x = 485,806.84 × 99,205.58
  4. Step 4: Simplify right side
    323,861.52x = 48,194,749,330.17
  5. Step 5: Solve for x
    x = 48,194,749,330.17/323,861.52
  6. Step 6: Final answer
    x = 148,812.83

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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.