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Finding the Fourth Proportional to 281,331.12, 422,033.74 and 91,724.91

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Solution

The fourth proportional to 281,331.12, 422,033.74 and 91,724.91 is: 137,599.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,331.12 : 422,033.74 = 91,724.91 : x
  2. Step 2: Convert to fraction form
    281,331.12/422,033.74 = 91,724.91/x
  3. Step 3: Cross multiply
    281,331.12x = 422,033.74 × 91,724.91
  4. Step 4: Simplify right side
    281,331.12x = 38,711,004,708.29
  5. Step 5: Solve for x
    x = 38,711,004,708.29/281,331.12
  6. Step 6: Final answer
    x = 137,599.44

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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.