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Finding the Fourth Proportional to 281,936.22, 422,903.97 and 68,703.90

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Solution

The fourth proportional to 281,936.22, 422,903.97 and 68,703.90 is: 103,055.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,936.22 : 422,903.97 = 68,703.90 : x
  2. Step 2: Convert to fraction form
    281,936.22/422,903.97 = 68,703.90/x
  3. Step 3: Cross multiply
    281,936.22x = 422,903.97 × 68,703.90
  4. Step 4: Simplify right side
    281,936.22x = 29,055,152,064.48
  5. Step 5: Solve for x
    x = 29,055,152,064.48/281,936.22
  6. Step 6: Final answer
    x = 103,055.76

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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.