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Finding the Fourth Proportional to 263,000.80, 394,760.40 and 130,031.20

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Solution

The fourth proportional to 263,000.80, 394,760.40 and 130,031.20 is: 195,174.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,000.80 : 394,760.40 = 130,031.20 : x
  2. Step 2: Convert to fraction form
    263,000.80/394,760.40 = 130,031.20/x
  3. Step 3: Cross multiply
    263,000.80x = 394,760.40 × 130,031.20
  4. Step 4: Simplify right side
    263,000.80x = 51,331,168,524.48
  5. Step 5: Solve for x
    x = 51,331,168,524.48/263,000.80
  6. Step 6: Final answer
    x = 195,174.95

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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.