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Finding the Fourth Proportional to 486,209.79, 671,003.19 and 271,391.72

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Solution

The fourth proportional to 486,209.79, 671,003.19 and 271,391.72 is: 374,539.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,209.79 : 671,003.19 = 271,391.72 : x
  2. Step 2: Convert to fraction form
    486,209.79/671,003.19 = 271,391.72/x
  3. Step 3: Cross multiply
    486,209.79x = 671,003.19 × 271,391.72
  4. Step 4: Simplify right side
    486,209.79x = 182,104,706,504.57
  5. Step 5: Solve for x
    x = 182,104,706,504.57/486,209.79
  6. Step 6: Final answer
    x = 374,539.37

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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.