Home / 221,043.32-331,629.66-71,280.59

Finding the Fourth Proportional to 221,043.32, 331,629.66 and 71,280.59

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Solution

The fourth proportional to 221,043.32, 331,629.66 and 71,280.59 is: 106,941.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,043.32 : 331,629.66 = 71,280.59 : x
  2. Step 2: Convert to fraction form
    221,043.32/331,629.66 = 71,280.59/x
  3. Step 3: Cross multiply
    221,043.32x = 331,629.66 × 71,280.59
  4. Step 4: Simplify right side
    221,043.32x = 23,638,757,826.30
  5. Step 5: Solve for x
    x = 23,638,757,826.30/221,043.32
  6. Step 6: Final answer
    x = 106,941.74

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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.