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Finding the Fourth Proportional to 323,568.20, 485,352.30 and 165,744.20

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Solution

The fourth proportional to 323,568.20, 485,352.30 and 165,744.20 is: 248,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,568.20 : 485,352.30 = 165,744.20 : x
  2. Step 2: Convert to fraction form
    323,568.20/485,352.30 = 165,744.20/x
  3. Step 3: Cross multiply
    323,568.20x = 485,352.30 × 165,744.20
  4. Step 4: Simplify right side
    323,568.20x = 80,444,328,681.66
  5. Step 5: Solve for x
    x = 80,444,328,681.66/323,568.20
  6. Step 6: Final answer
    x = 248,616.30

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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.