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Finding the Fourth Proportional to 323,819.80, 485,729.70 and 264,722.20

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Solution

The fourth proportional to 323,819.80, 485,729.70 and 264,722.20 is: 397,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,819.80 : 485,729.70 = 264,722.20 : x
  2. Step 2: Convert to fraction form
    323,819.80/485,729.70 = 264,722.20/x
  3. Step 3: Cross multiply
    323,819.80x = 485,729.70 × 264,722.20
  4. Step 4: Simplify right side
    323,819.80x = 128,583,434,789.34
  5. Step 5: Solve for x
    x = 128,583,434,789.34/323,819.80
  6. Step 6: Final answer
    x = 397,083.30

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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.