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Finding the Fourth Proportional to 239,812, 330,940.56 and 133,828

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Solution

The fourth proportional to 239,812, 330,940.56 and 133,828 is: 184,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,812 : 330,940.56 = 133,828 : x
  2. Step 2: Convert to fraction form
    239,812/330,940.56 = 133,828/x
  3. Step 3: Cross multiply
    239,812x = 330,940.56 × 133,828
  4. Step 4: Simplify right side
    239,812x = 44,289,113,263.68
  5. Step 5: Solve for x
    x = 44,289,113,263.68/239,812
  6. Step 6: Final answer
    x = 184,682.64

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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.