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Finding the Fourth Proportional to 489,426.80, 675,398.82 and 271,622.83

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Solution

The fourth proportional to 489,426.80, 675,398.82 and 271,622.83 is: 374,833.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,426.80 : 675,398.82 = 271,622.83 : x
  2. Step 2: Convert to fraction form
    489,426.80/675,398.82 = 271,622.83/x
  3. Step 3: Cross multiply
    489,426.80x = 675,398.82 × 271,622.83
  4. Step 4: Simplify right side
    489,426.80x = 183,453,735,272.15
  5. Step 5: Solve for x
    x = 183,453,735,272.15/489,426.80
  6. Step 6: Final answer
    x = 374,833.86

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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.