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Finding the Fourth Proportional to 281,284.76, 421,361.76 and 131,318.12

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Solution

The fourth proportional to 281,284.76, 421,361.76 and 131,318.12 is: 196,713.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,284.76 : 421,361.76 = 131,318.12 : x
  2. Step 2: Convert to fraction form
    281,284.76/421,361.76 = 131,318.12/x
  3. Step 3: Cross multiply
    281,284.76x = 421,361.76 × 131,318.12
  4. Step 4: Simplify right side
    281,284.76x = 55,332,434,163.09
  5. Step 5: Solve for x
    x = 55,332,434,163.09/281,284.76
  6. Step 6: Final answer
    x = 196,713.23

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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.