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Finding the Fourth Proportional to 486,734.96, 671,674.20 and 271,874

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Solution

The fourth proportional to 486,734.96, 671,674.20 and 271,874 is: 375,174.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,734.96 : 671,674.20 = 271,874 : x
  2. Step 2: Convert to fraction form
    486,734.96/671,674.20 = 271,874/x
  3. Step 3: Cross multiply
    486,734.96x = 671,674.20 × 271,874
  4. Step 4: Simplify right side
    486,734.96x = 182,610,751,450.80
  5. Step 5: Solve for x
    x = 182,610,751,450.80/486,734.96
  6. Step 6: Final answer
    x = 375,174.92

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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.