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Finding the Fourth Proportional to 285,868.92, 394,369.74 and 178,465.44

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Solution

The fourth proportional to 285,868.92, 394,369.74 and 178,465.44 is: 246,201.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,868.92 : 394,369.74 = 178,465.44 : x
  2. Step 2: Convert to fraction form
    285,868.92/394,369.74 = 178,465.44/x
  3. Step 3: Cross multiply
    285,868.92x = 394,369.74 × 178,465.44
  4. Step 4: Simplify right side
    285,868.92x = 70,381,369,171.79
  5. Step 5: Solve for x
    x = 70,381,369,171.79/285,868.92
  6. Step 6: Final answer
    x = 246,201.54

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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.