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Finding the Fourth Proportional to 489,641.41, 675,689.98 and 271,845.37

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Solution

The fourth proportional to 489,641.41, 675,689.98 and 271,845.37 is: 375,138.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,641.41 : 675,689.98 = 271,845.37 : x
  2. Step 2: Convert to fraction form
    489,641.41/675,689.98 = 271,845.37/x
  3. Step 3: Cross multiply
    489,641.41x = 675,689.98 × 271,845.37
  4. Step 4: Simplify right side
    489,641.41x = 183,683,188,727.78
  5. Step 5: Solve for x
    x = 183,683,188,727.78/489,641.41
  6. Step 6: Final answer
    x = 375,138.19

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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.