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Finding the Fourth Proportional to 323,489.80, 485,324.71 and 141,136.55

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Solution

The fourth proportional to 323,489.80, 485,324.71 and 141,136.55 is: 211,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,489.80 : 485,324.71 = 141,136.55 : x
  2. Step 2: Convert to fraction form
    323,489.80/485,324.71 = 141,136.55/x
  3. Step 3: Cross multiply
    323,489.80x = 485,324.71 × 141,136.55
  4. Step 4: Simplify right side
    323,489.80x = 68,497,055,199.15
  5. Step 5: Solve for x
    x = 68,497,055,199.15/323,489.80
  6. Step 6: Final answer
    x = 211,744.10

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1.5x scale

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.