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Finding the Fourth Proportional to 486,732.96, 671,671.44 and 271,872

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Solution

The fourth proportional to 486,732.96, 671,671.44 and 271,872 is: 375,172.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,732.96 : 671,671.44 = 271,872 : x
  2. Step 2: Convert to fraction form
    486,732.96/671,671.44 = 271,872/x
  3. Step 3: Cross multiply
    486,732.96x = 671,671.44 × 271,872
  4. Step 4: Simplify right side
    486,732.96x = 182,608,657,735.68
  5. Step 5: Solve for x
    x = 182,608,657,735.68/486,732.96
  6. Step 6: Final answer
    x = 375,172.16

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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.