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Finding the Fourth Proportional to 323,910.91, 485,954.64 and 99,266.36

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Solution

The fourth proportional to 323,910.91, 485,954.64 and 99,266.36 is: 148,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,910.91 : 485,954.64 = 99,266.36 : x
  2. Step 2: Convert to fraction form
    323,910.91/485,954.64 = 99,266.36/x
  3. Step 3: Cross multiply
    323,910.91x = 485,954.64 × 99,266.36
  4. Step 4: Simplify right side
    323,910.91x = 48,238,949,452.80
  5. Step 5: Solve for x
    x = 48,238,949,452.80/323,910.91
  6. Step 6: Final answer
    x = 148,926.60

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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.