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Finding the Fourth Proportional to 281,370, 422,158.68 and 148,244.88

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Solution

The fourth proportional to 281,370, 422,158.68 and 148,244.88 is: 222,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,370 : 422,158.68 = 148,244.88 : x
  2. Step 2: Convert to fraction form
    281,370/422,158.68 = 148,244.88/x
  3. Step 3: Cross multiply
    281,370x = 422,158.68 × 148,244.88
  4. Step 4: Simplify right side
    281,370x = 62,582,862,857.56
  5. Step 5: Solve for x
    x = 62,582,862,857.56/281,370
  6. Step 6: Final answer
    x = 222,421.95

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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.