Home / 221,206.16-331,842.72-80,931.44

Finding the Fourth Proportional to 221,206.16, 331,842.72 and 80,931.44

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Solution

The fourth proportional to 221,206.16, 331,842.72 and 80,931.44 is: 121,409.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,206.16 : 331,842.72 = 80,931.44 : x
  2. Step 2: Convert to fraction form
    221,206.16/331,842.72 = 80,931.44/x
  3. Step 3: Cross multiply
    221,206.16x = 331,842.72 × 80,931.44
  4. Step 4: Simplify right side
    221,206.16x = 26,856,509,183.12
  5. Step 5: Solve for x
    x = 26,856,509,183.12/221,206.16
  6. Step 6: Final answer
    x = 121,409.41

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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.