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Finding the Fourth Proportional to 488,934.38, 674,675.39 and 271,137.58

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Solution

The fourth proportional to 488,934.38, 674,675.39 and 271,137.58 is: 374,139.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,934.38 : 674,675.39 = 271,137.58 : x
  2. Step 2: Convert to fraction form
    488,934.38/674,675.39 = 271,137.58/x
  3. Step 3: Cross multiply
    488,934.38x = 674,675.39 × 271,137.58
  4. Step 4: Simplify right side
    488,934.38x = 182,929,851,521.31
  5. Step 5: Solve for x
    x = 182,929,851,521.31/488,934.38
  6. Step 6: Final answer
    x = 374,139.88

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1.5x scale

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.