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Finding the Fourth Proportional to 281,359.08, 422,080.20 and 81,653.58

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Solution

The fourth proportional to 281,359.08, 422,080.20 and 81,653.58 is: 122,492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,359.08 : 422,080.20 = 81,653.58 : x
  2. Step 2: Convert to fraction form
    281,359.08/422,080.20 = 81,653.58/x
  3. Step 3: Cross multiply
    281,359.08x = 422,080.20 × 81,653.58
  4. Step 4: Simplify right side
    281,359.08x = 34,464,359,377.12
  5. Step 5: Solve for x
    x = 34,464,359,377.12/281,359.08
  6. Step 6: Final answer
    x = 122,492.44

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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.