Home / 219,743.60-329,615.40-131,097.20

Finding the Fourth Proportional to 219,743.60, 329,615.40 and 131,097.20

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Solution

The fourth proportional to 219,743.60, 329,615.40 and 131,097.20 is: 196,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,743.60 : 329,615.40 = 131,097.20 : x
  2. Step 2: Convert to fraction form
    219,743.60/329,615.40 = 131,097.20/x
  3. Step 3: Cross multiply
    219,743.60x = 329,615.40 × 131,097.20
  4. Step 4: Simplify right side
    219,743.60x = 43,211,656,016.88
  5. Step 5: Solve for x
    x = 43,211,656,016.88/219,743.60
  6. Step 6: Final answer
    x = 196,645.80

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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.