Home / 216,511.20-324,969.30-109,971.36

Finding the Fourth Proportional to 216,511.20, 324,969.30 and 109,971.36

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Solution

The fourth proportional to 216,511.20, 324,969.30 and 109,971.36 is: 165,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,511.20 : 324,969.30 = 109,971.36 : x
  2. Step 2: Convert to fraction form
    216,511.20/324,969.30 = 109,971.36/x
  3. Step 3: Cross multiply
    216,511.20x = 324,969.30 × 109,971.36
  4. Step 4: Simplify right side
    216,511.20x = 35,737,315,879.25
  5. Step 5: Solve for x
    x = 35,737,315,879.25/216,511.20
  6. Step 6: Final answer
    x = 165,059.89

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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.