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Finding the Fourth Proportional to 379,128.80, 568,520.40 and 168,658.40

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Solution

The fourth proportional to 379,128.80, 568,520.40 and 168,658.40 is: 252,910.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,128.80 : 568,520.40 = 168,658.40 : x
  2. Step 2: Convert to fraction form
    379,128.80/568,520.40 = 168,658.40/x
  3. Step 3: Cross multiply
    379,128.80x = 568,520.40 × 168,658.40
  4. Step 4: Simplify right side
    379,128.80x = 95,885,741,031.36
  5. Step 5: Solve for x
    x = 95,885,741,031.36/379,128.80
  6. Step 6: Final answer
    x = 252,910.73

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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.