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Finding the Fourth Proportional to 379,508.66, 569,069.52 and 126,698.28

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Solution

The fourth proportional to 379,508.66, 569,069.52 and 126,698.28 is: 189,982.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,508.66 : 569,069.52 = 126,698.28 : x
  2. Step 2: Convert to fraction form
    379,508.66/569,069.52 = 126,698.28/x
  3. Step 3: Cross multiply
    379,508.66x = 569,069.52 × 126,698.28
  4. Step 4: Simplify right side
    379,508.66x = 72,100,129,384.43
  5. Step 5: Solve for x
    x = 72,100,129,384.43/379,508.66
  6. Step 6: Final answer
    x = 189,982.83

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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.