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Finding the Fourth Proportional to 254,234.80, 381,352.20 and 206,995.60

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Solution

The fourth proportional to 254,234.80, 381,352.20 and 206,995.60 is: 310,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,234.80 : 381,352.20 = 206,995.60 : x
  2. Step 2: Convert to fraction form
    254,234.80/381,352.20 = 206,995.60/x
  3. Step 3: Cross multiply
    254,234.80x = 381,352.20 × 206,995.60
  4. Step 4: Simplify right side
    254,234.80x = 78,938,227,450.32
  5. Step 5: Solve for x
    x = 78,938,227,450.32/254,234.80
  6. Step 6: Final answer
    x = 310,493.40

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Similar ratio
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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.