Home / 221,575.44-331,985.04-121,819.20

Finding the Fourth Proportional to 221,575.44, 331,985.04 and 121,819.20

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Solution

The fourth proportional to 221,575.44, 331,985.04 and 121,819.20 is: 182,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,575.44 : 331,985.04 = 121,819.20 : x
  2. Step 2: Convert to fraction form
    221,575.44/331,985.04 = 121,819.20/x
  3. Step 3: Cross multiply
    221,575.44x = 331,985.04 × 121,819.20
  4. Step 4: Simplify right side
    221,575.44x = 40,442,151,984.77
  5. Step 5: Solve for x
    x = 40,442,151,984.77/221,575.44
  6. Step 6: Final answer
    x = 182,520.91

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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.