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Finding the Fourth Proportional to 323,520.20, 485,280.30 and 113,136.20

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Solution

The fourth proportional to 323,520.20, 485,280.30 and 113,136.20 is: 169,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,520.20 : 485,280.30 = 113,136.20 : x
  2. Step 2: Convert to fraction form
    323,520.20/485,280.30 = 113,136.20/x
  3. Step 3: Cross multiply
    323,520.20x = 485,280.30 × 113,136.20
  4. Step 4: Simplify right side
    323,520.20x = 54,902,769,076.86
  5. Step 5: Solve for x
    x = 54,902,769,076.86/323,520.20
  6. Step 6: Final answer
    x = 169,704.30

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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.