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Finding the Fourth Proportional to 539,974.35, 809,480.21 and 255,487.34

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Solution

The fourth proportional to 539,974.35, 809,480.21 and 255,487.34 is: 383,003.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,974.35 : 809,480.21 = 255,487.34 : x
  2. Step 2: Convert to fraction form
    539,974.35/809,480.21 = 255,487.34/x
  3. Step 3: Cross multiply
    539,974.35x = 809,480.21 × 255,487.34
  4. Step 4: Simplify right side
    539,974.35x = 206,811,945,635.54
  5. Step 5: Solve for x
    x = 206,811,945,635.54/539,974.35
  6. Step 6: Final answer
    x = 383,003.28

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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.