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Finding the Fourth Proportional to 379,287.57, 568,971.38 and 126,479.95

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Solution

The fourth proportional to 379,287.57, 568,971.38 and 126,479.95 is: 189,733.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,287.57 : 568,971.38 = 126,479.95 : x
  2. Step 2: Convert to fraction form
    379,287.57/568,971.38 = 126,479.95/x
  3. Step 3: Cross multiply
    379,287.57x = 568,971.38 × 126,479.95
  4. Step 4: Simplify right side
    379,287.57x = 71,963,471,693.83
  5. Step 5: Solve for x
    x = 71,963,471,693.83/379,287.57
  6. Step 6: Final answer
    x = 189,733.27

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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.