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Finding the Fourth Proportional to 281,366.88, 422,085 and 91,776.56

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Solution

The fourth proportional to 281,366.88, 422,085 and 91,776.56 is: 137,676.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,366.88 : 422,085 = 91,776.56 : x
  2. Step 2: Convert to fraction form
    281,366.88/422,085 = 91,776.56/x
  3. Step 3: Cross multiply
    281,366.88x = 422,085 × 91,776.56
  4. Step 4: Simplify right side
    281,366.88x = 38,737,509,327.60
  5. Step 5: Solve for x
    x = 38,737,509,327.60/281,366.88
  6. Step 6: Final answer
    x = 137,676.15

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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.