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Finding the Fourth Proportional to 263,474.34, 395,274.39 and 85,981.67

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Solution

The fourth proportional to 263,474.34, 395,274.39 and 85,981.67 is: 128,993.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,474.34 : 395,274.39 = 85,981.67 : x
  2. Step 2: Convert to fraction form
    263,474.34/395,274.39 = 85,981.67/x
  3. Step 3: Cross multiply
    263,474.34x = 395,274.39 × 85,981.67
  4. Step 4: Simplify right side
    263,474.34x = 33,986,352,160.43
  5. Step 5: Solve for x
    x = 33,986,352,160.43/263,474.34
  6. Step 6: Final answer
    x = 128,993.03

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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.