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Finding the Fourth Proportional to 489,318.33, 675,264.96 and 271,531.47

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Solution

The fourth proportional to 489,318.33, 675,264.96 and 271,531.47 is: 374,716.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,318.33 : 675,264.96 = 271,531.47 : x
  2. Step 2: Convert to fraction form
    489,318.33/675,264.96 = 271,531.47/x
  3. Step 3: Cross multiply
    489,318.33x = 675,264.96 × 271,531.47
  4. Step 4: Simplify right side
    489,318.33x = 183,355,687,228.29
  5. Step 5: Solve for x
    x = 183,355,687,228.29/489,318.33
  6. Step 6: Final answer
    x = 374,716.57

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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.