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Finding the Fourth Proportional to 281,898.82, 422,826.17 and 79,486.75

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Solution

The fourth proportional to 281,898.82, 422,826.17 and 79,486.75 is: 119,223.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,898.82 : 422,826.17 = 79,486.75 : x
  2. Step 2: Convert to fraction form
    281,898.82/422,826.17 = 79,486.75/x
  3. Step 3: Cross multiply
    281,898.82x = 422,826.17 × 79,486.75
  4. Step 4: Simplify right side
    281,898.82x = 33,609,078,068.25
  5. Step 5: Solve for x
    x = 33,609,078,068.25/281,898.82
  6. Step 6: Final answer
    x = 119,223.90

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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.