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Finding the Fourth Proportional to 486,704.60, 671,645.22 and 271,847.78

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Solution

The fourth proportional to 486,704.60, 671,645.22 and 271,847.78 is: 375,145.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,704.60 : 671,645.22 = 271,847.78 : x
  2. Step 2: Convert to fraction form
    486,704.60/671,645.22 = 271,847.78/x
  3. Step 3: Cross multiply
    486,704.60x = 671,645.22 × 271,847.78
  4. Step 4: Simplify right side
    486,704.60x = 182,585,262,004.61
  5. Step 5: Solve for x
    x = 182,585,262,004.61/486,704.60
  6. Step 6: Final answer
    x = 375,145.96

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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.