Home / 221,023.20-331,144.40-213,714.40

Finding the Fourth Proportional to 221,023.20, 331,144.40 and 213,714.40

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Solution

The fourth proportional to 221,023.20, 331,144.40 and 213,714.40 is: 320,194.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,023.20 : 331,144.40 = 213,714.40 : x
  2. Step 2: Convert to fraction form
    221,023.20/331,144.40 = 213,714.40/x
  3. Step 3: Cross multiply
    221,023.20x = 331,144.40 × 213,714.40
  4. Step 4: Simplify right side
    221,023.20x = 70,770,326,759.36
  5. Step 5: Solve for x
    x = 70,770,326,759.36/221,023.20
  6. Step 6: Final answer
    x = 320,194.11

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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.