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Finding the Fourth Proportional to 281,114.20, 421,671.30 and 268,672.60

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Solution

The fourth proportional to 281,114.20, 421,671.30 and 268,672.60 is: 403,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,114.20 : 421,671.30 = 268,672.60 : x
  2. Step 2: Convert to fraction form
    281,114.20/421,671.30 = 268,672.60/x
  3. Step 3: Cross multiply
    281,114.20x = 421,671.30 × 268,672.60
  4. Step 4: Simplify right side
    281,114.20x = 113,291,524,516.38
  5. Step 5: Solve for x
    x = 113,291,524,516.38/281,114.20
  6. Step 6: Final answer
    x = 403,008.90

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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.