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Finding the Fourth Proportional to 281,374.08, 422,102.72 and 81,668.60

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Solution

The fourth proportional to 281,374.08, 422,102.72 and 81,668.60 is: 122,514.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,374.08 : 422,102.72 = 81,668.60 : x
  2. Step 2: Convert to fraction form
    281,374.08/422,102.72 = 81,668.60/x
  3. Step 3: Cross multiply
    281,374.08x = 422,102.72 × 81,668.60
  4. Step 4: Simplify right side
    281,374.08x = 34,472,538,198.59
  5. Step 5: Solve for x
    x = 34,472,538,198.59/281,374.08
  6. Step 6: Final answer
    x = 122,514.97

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1.5x scale

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.