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Finding the Fourth Proportional to 323,781.30, 485,671.95 and 271,293.30

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Solution

The fourth proportional to 323,781.30, 485,671.95 and 271,293.30 is: 406,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,781.30 : 485,671.95 = 271,293.30 : x
  2. Step 2: Convert to fraction form
    323,781.30/485,671.95 = 271,293.30/x
  3. Step 3: Cross multiply
    323,781.30x = 485,671.95 × 271,293.30
  4. Step 4: Simplify right side
    323,781.30x = 131,759,546,032.94
  5. Step 5: Solve for x
    x = 131,759,546,032.94/323,781.30
  6. Step 6: Final answer
    x = 406,939.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.