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Finding the Fourth Proportional to 379,126.91, 568,285.76 and 189,213.30

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Solution

The fourth proportional to 379,126.91, 568,285.76 and 189,213.30 is: 283,618.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,126.91 : 568,285.76 = 189,213.30 : x
  2. Step 2: Convert to fraction form
    379,126.91/568,285.76 = 189,213.30/x
  3. Step 3: Cross multiply
    379,126.91x = 568,285.76 × 189,213.30
  4. Step 4: Simplify right side
    379,126.91x = 107,527,224,465.64
  5. Step 5: Solve for x
    x = 107,527,224,465.64/379,126.91
  6. Step 6: Final answer
    x = 283,618.02

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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.