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Finding the Fourth Proportional to 381,705.56, 526,750.98 and 211,940.36

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Solution

The fourth proportional to 381,705.56, 526,750.98 and 211,940.36 is: 292,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,705.56 : 526,750.98 = 211,940.36 : x
  2. Step 2: Convert to fraction form
    381,705.56/526,750.98 = 211,940.36/x
  3. Step 3: Cross multiply
    381,705.56x = 526,750.98 × 211,940.36
  4. Step 4: Simplify right side
    381,705.56x = 111,639,792,331.55
  5. Step 5: Solve for x
    x = 111,639,792,331.55/381,705.56
  6. Step 6: Final answer
    x = 292,476.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.