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Finding the Fourth Proportional to 281,604.48, 422,408.40 and 71,242.32

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Solution

The fourth proportional to 281,604.48, 422,408.40 and 71,242.32 is: 106,863.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,604.48 : 422,408.40 = 71,242.32 : x
  2. Step 2: Convert to fraction form
    281,604.48/422,408.40 = 71,242.32/x
  3. Step 3: Cross multiply
    281,604.48x = 422,408.40 × 71,242.32
  4. Step 4: Simplify right side
    281,604.48x = 30,093,354,403.49
  5. Step 5: Solve for x
    x = 30,093,354,403.49/281,604.48
  6. Step 6: Final answer
    x = 106,863.91

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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.