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Finding the Fourth Proportional to 208,787.49, 313,027.88 and 66,550.91

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Solution

The fourth proportional to 208,787.49, 313,027.88 and 66,550.91 is: 99,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,787.49 : 313,027.88 = 66,550.91 : x
  2. Step 2: Convert to fraction form
    208,787.49/313,027.88 = 66,550.91/x
  3. Step 3: Cross multiply
    208,787.49x = 313,027.88 × 66,550.91
  4. Step 4: Simplify right side
    208,787.49x = 20,832,288,371.48
  5. Step 5: Solve for x
    x = 20,832,288,371.48/208,787.49
  6. Step 6: Final answer
    x = 99,777.47

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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.