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Finding the Fourth Proportional to 449,380.06, 620,148.72 and 255,778.32

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Solution

The fourth proportional to 449,380.06, 620,148.72 and 255,778.32 is: 352,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,380.06 : 620,148.72 = 255,778.32 : x
  2. Step 2: Convert to fraction form
    449,380.06/620,148.72 = 255,778.32/x
  3. Step 3: Cross multiply
    449,380.06x = 620,148.72 × 255,778.32
  4. Step 4: Simplify right side
    449,380.06x = 158,620,597,751.75
  5. Step 5: Solve for x
    x = 158,620,597,751.75/449,380.06
  6. Step 6: Final answer
    x = 352,976.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.