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Finding the Fourth Proportional to 486,498.69, 671,367.96 and 271,638.63

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Solution

The fourth proportional to 486,498.69, 671,367.96 and 271,638.63 is: 374,861.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,498.69 : 671,367.96 = 271,638.63 : x
  2. Step 2: Convert to fraction form
    486,498.69/671,367.96 = 271,638.63/x
  3. Step 3: Cross multiply
    486,498.69x = 671,367.96 × 271,638.63
  4. Step 4: Simplify right side
    486,498.69x = 182,369,472,880.30
  5. Step 5: Solve for x
    x = 182,369,472,880.30/486,498.69
  6. Step 6: Final answer
    x = 374,861.18

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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.