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Finding the Fourth Proportional to 281,644.66, 422,467.62 and 68,411.62

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Solution

The fourth proportional to 281,644.66, 422,467.62 and 68,411.62 is: 102,617.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,644.66 : 422,467.62 = 68,411.62 : x
  2. Step 2: Convert to fraction form
    281,644.66/422,467.62 = 68,411.62/x
  3. Step 3: Cross multiply
    281,644.66x = 422,467.62 × 68,411.62
  4. Step 4: Simplify right side
    281,644.66x = 28,901,694,281.74
  5. Step 5: Solve for x
    x = 28,901,694,281.74/281,644.66
  6. Step 6: Final answer
    x = 102,617.58

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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.