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Finding the Fourth Proportional to 325,631.20, 488,965.20 and 220,914.40

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Solution

The fourth proportional to 325,631.20, 488,965.20 and 220,914.40 is: 331,723.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,631.20 : 488,965.20 = 220,914.40 : x
  2. Step 2: Convert to fraction form
    325,631.20/488,965.20 = 220,914.40/x
  3. Step 3: Cross multiply
    325,631.20x = 488,965.20 × 220,914.40
  4. Step 4: Simplify right side
    325,631.20x = 108,019,453,778.88
  5. Step 5: Solve for x
    x = 108,019,453,778.88/325,631.20
  6. Step 6: Final answer
    x = 331,723.29

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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.