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Finding the Fourth Proportional to 239,622, 330,678.36 and 133,638

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Solution

The fourth proportional to 239,622, 330,678.36 and 133,638 is: 184,420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,622 : 330,678.36 = 133,638 : x
  2. Step 2: Convert to fraction form
    239,622/330,678.36 = 133,638/x
  3. Step 3: Cross multiply
    239,622x = 330,678.36 × 133,638
  4. Step 4: Simplify right side
    239,622x = 44,191,194,673.68
  5. Step 5: Solve for x
    x = 44,191,194,673.68/239,622
  6. Step 6: Final answer
    x = 184,420.44

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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.