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Finding the Fourth Proportional to 247,286.70, 370,908.45 and 81,074.70

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Solution

The fourth proportional to 247,286.70, 370,908.45 and 81,074.70 is: 121,604.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,286.70 : 370,908.45 = 81,074.70 : x
  2. Step 2: Convert to fraction form
    247,286.70/370,908.45 = 81,074.70/x
  3. Step 3: Cross multiply
    247,286.70x = 370,908.45 × 81,074.70
  4. Step 4: Simplify right side
    247,286.70x = 30,071,291,311.22
  5. Step 5: Solve for x
    x = 30,071,291,311.22/247,286.70
  6. Step 6: Final answer
    x = 121,604.97

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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.