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Finding the Fourth Proportional to 323,612.10, 485,072.55 and 123,855.30

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Solution

The fourth proportional to 323,612.10, 485,072.55 and 123,855.30 is: 185,650.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,612.10 : 485,072.55 = 123,855.30 : x
  2. Step 2: Convert to fraction form
    323,612.10/485,072.55 = 123,855.30/x
  3. Step 3: Cross multiply
    323,612.10x = 485,072.55 × 123,855.30
  4. Step 4: Simplify right side
    323,612.10x = 60,078,806,202.02
  5. Step 5: Solve for x
    x = 60,078,806,202.02/323,612.10
  6. Step 6: Final answer
    x = 185,650.68

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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.