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Finding the Fourth Proportional to 208,858.04, 313,340.46 and 68,617.88

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Solution

The fourth proportional to 208,858.04, 313,340.46 and 68,617.88 is: 102,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,858.04 : 313,340.46 = 68,617.88 : x
  2. Step 2: Convert to fraction form
    208,858.04/313,340.46 = 68,617.88/x
  3. Step 3: Cross multiply
    208,858.04x = 313,340.46 × 68,617.88
  4. Step 4: Simplify right side
    208,858.04x = 21,500,758,083.42
  5. Step 5: Solve for x
    x = 21,500,758,083.42/208,858.04
  6. Step 6: Final answer
    x = 102,944.36

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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.