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Finding the Fourth Proportional to 281,302.89, 422,112.15 and 279,166.52

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Solution

The fourth proportional to 281,302.89, 422,112.15 and 279,166.52 is: 418,906.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,302.89 : 422,112.15 = 279,166.52 : x
  2. Step 2: Convert to fraction form
    281,302.89/422,112.15 = 279,166.52/x
  3. Step 3: Cross multiply
    281,302.89x = 422,112.15 × 279,166.52
  4. Step 4: Simplify right side
    281,302.89x = 117,839,577,854.66
  5. Step 5: Solve for x
    x = 117,839,577,854.66/281,302.89
  6. Step 6: Final answer
    x = 418,906.39

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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.