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Finding the Fourth Proportional to 281,494.94, 422,262.95 and 79,120.89

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Solution

The fourth proportional to 281,494.94, 422,262.95 and 79,120.89 is: 118,687.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,494.94 : 422,262.95 = 79,120.89 : x
  2. Step 2: Convert to fraction form
    281,494.94/422,262.95 = 79,120.89/x
  3. Step 3: Cross multiply
    281,494.94x = 422,262.95 × 79,120.89
  4. Step 4: Simplify right side
    281,494.94x = 33,409,820,022.42
  5. Step 5: Solve for x
    x = 33,409,820,022.42/281,494.94
  6. Step 6: Final answer
    x = 118,687.11

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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.