Home / 219,921.20-329,881.80-72,177.20

Finding the Fourth Proportional to 219,921.20, 329,881.80 and 72,177.20

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Solution

The fourth proportional to 219,921.20, 329,881.80 and 72,177.20 is: 108,265.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,921.20 : 329,881.80 = 72,177.20 : x
  2. Step 2: Convert to fraction form
    219,921.20/329,881.80 = 72,177.20/x
  3. Step 3: Cross multiply
    219,921.20x = 329,881.80 × 72,177.20
  4. Step 4: Simplify right side
    219,921.20x = 23,809,944,654.96
  5. Step 5: Solve for x
    x = 23,809,944,654.96/219,921.20
  6. Step 6: Final answer
    x = 108,265.80

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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.