Home / 420,564.70-580,371.82-239,272.73

Finding the Fourth Proportional to 420,564.70, 580,371.82 and 239,272.73

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Solution

The fourth proportional to 420,564.70, 580,371.82 and 239,272.73 is: 330,192.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,564.70 : 580,371.82 = 239,272.73 : x
  2. Step 2: Convert to fraction form
    420,564.70/580,371.82 = 239,272.73/x
  3. Step 3: Cross multiply
    420,564.70x = 580,371.82 × 239,272.73
  4. Step 4: Simplify right side
    420,564.70x = 138,867,149,786.47
  5. Step 5: Solve for x
    x = 138,867,149,786.47/420,564.70
  6. Step 6: Final answer
    x = 330,192.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.