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Finding the Fourth Proportional to 231,740.21, 347,659.11 and 79,951.07

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Solution

The fourth proportional to 231,740.21, 347,659.11 and 79,951.07 is: 119,943.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,740.21 : 347,659.11 = 79,951.07 : x
  2. Step 2: Convert to fraction form
    231,740.21/347,659.11 = 79,951.07/x
  3. Step 3: Cross multiply
    231,740.21x = 347,659.11 × 79,951.07
  4. Step 4: Simplify right side
    231,740.21x = 27,795,716,101.45
  5. Step 5: Solve for x
    x = 27,795,716,101.45/231,740.21
  6. Step 6: Final answer
    x = 119,943.43

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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.