Home / 221,430.20-331,707.90-132,419.30

Finding the Fourth Proportional to 221,430.20, 331,707.90 and 132,419.30

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Solution

The fourth proportional to 221,430.20, 331,707.90 and 132,419.30 is: 198,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,430.20 : 331,707.90 = 132,419.30 : x
  2. Step 2: Convert to fraction form
    221,430.20/331,707.90 = 132,419.30/x
  3. Step 3: Cross multiply
    221,430.20x = 331,707.90 × 132,419.30
  4. Step 4: Simplify right side
    221,430.20x = 43,924,527,922.47
  5. Step 5: Solve for x
    x = 43,924,527,922.47/221,430.20
  6. Step 6: Final answer
    x = 198,367.38

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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.