Home / 325,784.78-489,214.61-219,849.34

Finding the Fourth Proportional to 325,784.78, 489,214.61 and 219,849.34

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Solution

The fourth proportional to 325,784.78, 489,214.61 and 219,849.34 is: 330,136.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,784.78 : 489,214.61 = 219,849.34 : x
  2. Step 2: Convert to fraction form
    325,784.78/489,214.61 = 219,849.34/x
  3. Step 3: Cross multiply
    325,784.78x = 489,214.61 × 219,849.34
  4. Step 4: Simplify right side
    325,784.78x = 107,553,505,581.54
  5. Step 5: Solve for x
    x = 107,553,505,581.54/325,784.78
  6. Step 6: Final answer
    x = 330,136.68

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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.