Home / 219,819.72-329,933.70-86,791.80

Finding the Fourth Proportional to 219,819.72, 329,933.70 and 86,791.80

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Solution

The fourth proportional to 219,819.72, 329,933.70 and 86,791.80 is: 130,268.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,819.72 : 329,933.70 = 86,791.80 : x
  2. Step 2: Convert to fraction form
    219,819.72/329,933.70 = 86,791.80/x
  3. Step 3: Cross multiply
    219,819.72x = 329,933.70 × 86,791.80
  4. Step 4: Simplify right side
    219,819.72x = 28,635,539,703.66
  5. Step 5: Solve for x
    x = 28,635,539,703.66/219,819.72
  6. Step 6: Final answer
    x = 130,268.29

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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.