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Finding the Fourth Proportional to 323,775.90, 485,469.45 and 166,311.90

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Solution

The fourth proportional to 323,775.90, 485,469.45 and 166,311.90 is: 249,367.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,775.90 : 485,469.45 = 166,311.90 : x
  2. Step 2: Convert to fraction form
    323,775.90/485,469.45 = 166,311.90/x
  3. Step 3: Cross multiply
    323,775.90x = 485,469.45 × 166,311.90
  4. Step 4: Simplify right side
    323,775.90x = 80,739,346,621.46
  5. Step 5: Solve for x
    x = 80,739,346,621.46/323,775.90
  6. Step 6: Final answer
    x = 249,367.99

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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.