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Finding the Fourth Proportional to 281,654.55, 422,475.83 and 68,423.46

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Solution

The fourth proportional to 281,654.55, 422,475.83 and 68,423.46 is: 102,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,654.55 : 422,475.83 = 68,423.46 : x
  2. Step 2: Convert to fraction form
    281,654.55/422,475.83 = 68,423.46/x
  3. Step 3: Cross multiply
    281,654.55x = 422,475.83 × 68,423.46
  4. Step 4: Simplify right side
    281,654.55x = 28,907,257,712.85
  5. Step 5: Solve for x
    x = 28,907,257,712.85/281,654.55
  6. Step 6: Final answer
    x = 102,633.73

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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.