Home / 221,043.95-331,630.61-71,281.23

Finding the Fourth Proportional to 221,043.95, 331,630.61 and 71,281.23

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Solution

The fourth proportional to 221,043.95, 331,630.61 and 71,281.23 is: 106,942.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,043.95 : 331,630.61 = 71,281.23 : x
  2. Step 2: Convert to fraction form
    221,043.95/331,630.61 = 71,281.23/x
  3. Step 3: Cross multiply
    221,043.95x = 331,630.61 × 71,281.23
  4. Step 4: Simplify right side
    221,043.95x = 23,639,037,430.04
  5. Step 5: Solve for x
    x = 23,639,037,430.04/221,043.95
  6. Step 6: Final answer
    x = 106,942.71

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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.