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Finding the Fourth Proportional to 250,659.78, 376,310.25 and 215,347.02

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Solution

The fourth proportional to 250,659.78, 376,310.25 and 215,347.02 is: 323,295.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,659.78 : 376,310.25 = 215,347.02 : x
  2. Step 2: Convert to fraction form
    250,659.78/376,310.25 = 215,347.02/x
  3. Step 3: Cross multiply
    250,659.78x = 376,310.25 × 215,347.02
  4. Step 4: Simplify right side
    250,659.78x = 81,037,290,932.96
  5. Step 5: Solve for x
    x = 81,037,290,932.96/250,659.78
  6. Step 6: Final answer
    x = 323,295.95

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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.