Home / 221,445.20-331,822.20-191,723.60

Finding the Fourth Proportional to 221,445.20, 331,822.20 and 191,723.60

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Solution

The fourth proportional to 221,445.20, 331,822.20 and 191,723.60 is: 287,286.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,445.20 : 331,822.20 = 191,723.60 : x
  2. Step 2: Convert to fraction form
    221,445.20/331,822.20 = 191,723.60/x
  3. Step 3: Cross multiply
    221,445.20x = 331,822.20 × 191,723.60
  4. Step 4: Simplify right side
    221,445.20x = 63,618,146,743.92
  5. Step 5: Solve for x
    x = 63,618,146,743.92/221,445.20
  6. Step 6: Final answer
    x = 287,286.19

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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.