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Finding the Fourth Proportional to 488,905.74, 674,691.35 and 271,129.73

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Solution

The fourth proportional to 488,905.74, 674,691.35 and 271,129.73 is: 374,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,905.74 : 674,691.35 = 271,129.73 : x
  2. Step 2: Convert to fraction form
    488,905.74/674,691.35 = 271,129.73/x
  3. Step 3: Cross multiply
    488,905.74x = 674,691.35 × 271,129.73
  4. Step 4: Simplify right side
    488,905.74x = 182,928,878,829.73
  5. Step 5: Solve for x
    x = 182,928,878,829.73/488,905.74
  6. Step 6: Final answer
    x = 374,159.81

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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.