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Finding the Fourth Proportional to 281,473.55, 422,432.21 and 104,031.30

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Solution

The fourth proportional to 281,473.55, 422,432.21 and 104,031.30 is: 156,128.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,473.55 : 422,432.21 = 104,031.30 : x
  2. Step 2: Convert to fraction form
    281,473.55/422,432.21 = 104,031.30/x
  3. Step 3: Cross multiply
    281,473.55x = 422,432.21 × 104,031.30
  4. Step 4: Simplify right side
    281,473.55x = 43,946,171,968.17
  5. Step 5: Solve for x
    x = 43,946,171,968.17/281,473.55
  6. Step 6: Final answer
    x = 156,128.96

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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.