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Finding the Fourth Proportional to 323,890.82, 485,818.71 and 99,251.90

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Solution

The fourth proportional to 323,890.82, 485,818.71 and 99,251.90 is: 148,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,890.82 : 485,818.71 = 99,251.90 : x
  2. Step 2: Convert to fraction form
    323,890.82/485,818.71 = 99,251.90/x
  3. Step 3: Cross multiply
    323,890.82x = 485,818.71 × 99,251.90
  4. Step 4: Simplify right side
    323,890.82x = 48,218,430,023.05
  5. Step 5: Solve for x
    x = 48,218,430,023.05/323,890.82
  6. Step 6: Final answer
    x = 148,872.48

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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.