Home / 219,750.87-331,273.35-205,103.30

Finding the Fourth Proportional to 219,750.87, 331,273.35 and 205,103.30

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Solution

The fourth proportional to 219,750.87, 331,273.35 and 205,103.30 is: 309,192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,750.87 : 331,273.35 = 205,103.30 : x
  2. Step 2: Convert to fraction form
    219,750.87/331,273.35 = 205,103.30/x
  3. Step 3: Cross multiply
    219,750.87x = 331,273.35 × 205,103.30
  4. Step 4: Simplify right side
    219,750.87x = 67,945,259,120.94
  5. Step 5: Solve for x
    x = 67,945,259,120.94/219,750.87
  6. Step 6: Final answer
    x = 309,192.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.