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Finding the Fourth Proportional to 486,884.40, 671,833.68 and 271,997.76

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Solution

The fourth proportional to 486,884.40, 671,833.68 and 271,997.76 is: 375,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,884.40 : 671,833.68 = 271,997.76 : x
  2. Step 2: Convert to fraction form
    486,884.40/671,833.68 = 271,997.76/x
  3. Step 3: Cross multiply
    486,884.40x = 671,833.68 × 271,997.76
  4. Step 4: Simplify right side
    486,884.40x = 182,737,256,052.56
  5. Step 5: Solve for x
    x = 182,737,256,052.56/486,884.40
  6. Step 6: Final answer
    x = 375,319.60

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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.