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Finding the Fourth Proportional to 489,667.26, 675,745.83 and 271,879.50

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Solution

The fourth proportional to 489,667.26, 675,745.83 and 271,879.50 is: 375,196.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,667.26 : 675,745.83 = 271,879.50 : x
  2. Step 2: Convert to fraction form
    489,667.26/675,745.83 = 271,879.50/x
  3. Step 3: Cross multiply
    489,667.26x = 675,745.83 × 271,879.50
  4. Step 4: Simplify right side
    489,667.26x = 183,721,438,387.49
  5. Step 5: Solve for x
    x = 183,721,438,387.49/489,667.26
  6. Step 6: Final answer
    x = 375,196.49

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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.