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Finding the Fourth Proportional to 386,753.88, 579,591.30 and 208,877.88

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Solution

The fourth proportional to 386,753.88, 579,591.30 and 208,877.88 is: 313,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,753.88 : 579,591.30 = 208,877.88 : x
  2. Step 2: Convert to fraction form
    386,753.88/579,591.30 = 208,877.88/x
  3. Step 3: Cross multiply
    386,753.88x = 579,591.30 × 208,877.88
  4. Step 4: Simplify right side
    386,753.88x = 121,063,802,010.44
  5. Step 5: Solve for x
    x = 121,063,802,010.44/386,753.88
  6. Step 6: Final answer
    x = 313,025.44

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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.