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Finding the Fourth Proportional to 228,969.80, 343,294.70 and 135,427.40

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Solution

The fourth proportional to 228,969.80, 343,294.70 and 135,427.40 is: 203,046.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,969.80 : 343,294.70 = 135,427.40 : x
  2. Step 2: Convert to fraction form
    228,969.80/343,294.70 = 135,427.40/x
  3. Step 3: Cross multiply
    228,969.80x = 343,294.70 × 135,427.40
  4. Step 4: Simplify right side
    228,969.80x = 46,491,508,654.78
  5. Step 5: Solve for x
    x = 46,491,508,654.78/228,969.80
  6. Step 6: Final answer
    x = 203,046.47

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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.