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Finding the Fourth Proportional to 281,538.11, 422,333.99 and 79,133.69

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Solution

The fourth proportional to 281,538.11, 422,333.99 and 79,133.69 is: 118,708.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,538.11 : 422,333.99 = 79,133.69 : x
  2. Step 2: Convert to fraction form
    281,538.11/422,333.99 = 79,133.69/x
  3. Step 3: Cross multiply
    281,538.11x = 422,333.99 × 79,133.69
  4. Step 4: Simplify right side
    281,538.11x = 33,420,847,998.04
  5. Step 5: Solve for x
    x = 33,420,847,998.04/281,538.11
  6. Step 6: Final answer
    x = 118,708.08

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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.