Home / 221,343.20-331,577.40-121,324.40

Finding the Fourth Proportional to 221,343.20, 331,577.40 and 121,324.40

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Solution

The fourth proportional to 221,343.20, 331,577.40 and 121,324.40 is: 181,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,343.20 : 331,577.40 = 121,324.40 : x
  2. Step 2: Convert to fraction form
    221,343.20/331,577.40 = 121,324.40/x
  3. Step 3: Cross multiply
    221,343.20x = 331,577.40 × 121,324.40
  4. Step 4: Simplify right side
    221,343.20x = 40,228,429,108.56
  5. Step 5: Solve for x
    x = 40,228,429,108.56/221,343.20
  6. Step 6: Final answer
    x = 181,746.85

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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.