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Finding the Fourth Proportional to 281,638.32, 422,452.80 and 68,407.98

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Solution

The fourth proportional to 281,638.32, 422,452.80 and 68,407.98 is: 102,610.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,638.32 : 422,452.80 = 68,407.98 : x
  2. Step 2: Convert to fraction form
    281,638.32/422,452.80 = 68,407.98/x
  3. Step 3: Cross multiply
    281,638.32x = 422,452.80 × 68,407.98
  4. Step 4: Simplify right side
    281,638.32x = 28,899,142,693.34
  5. Step 5: Solve for x
    x = 28,899,142,693.34/281,638.32
  6. Step 6: Final answer
    x = 102,610.83

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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.