Home / 219,890.40-329,641.20-131,049.60

Finding the Fourth Proportional to 219,890.40, 329,641.20 and 131,049.60

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Solution

The fourth proportional to 219,890.40, 329,641.20 and 131,049.60 is: 196,458.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,890.40 : 329,641.20 = 131,049.60 : x
  2. Step 2: Convert to fraction form
    219,890.40/329,641.20 = 131,049.60/x
  3. Step 3: Cross multiply
    219,890.40x = 329,641.20 × 131,049.60
  4. Step 4: Simplify right side
    219,890.40x = 43,199,347,403.52
  5. Step 5: Solve for x
    x = 43,199,347,403.52/219,890.40
  6. Step 6: Final answer
    x = 196,458.54

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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.