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Finding the Fourth Proportional to 379,499.91, 569,063.97 and 126,693.65

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Solution

The fourth proportional to 379,499.91, 569,063.97 and 126,693.65 is: 189,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,499.91 : 569,063.97 = 126,693.65 : x
  2. Step 2: Convert to fraction form
    379,499.91/569,063.97 = 126,693.65/x
  3. Step 3: Cross multiply
    379,499.91x = 569,063.97 × 126,693.65
  4. Step 4: Simplify right side
    379,499.91x = 72,096,788,597.47
  5. Step 5: Solve for x
    x = 72,096,788,597.47/379,499.91
  6. Step 6: Final answer
    x = 189,978.41

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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.