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Finding the Fourth Proportional to 263,152.92, 394,787.70 and 122,835

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Solution

The fourth proportional to 263,152.92, 394,787.70 and 122,835 is: 184,279.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,152.92 : 394,787.70 = 122,835 : x
  2. Step 2: Convert to fraction form
    263,152.92/394,787.70 = 122,835/x
  3. Step 3: Cross multiply
    263,152.92x = 394,787.70 × 122,835
  4. Step 4: Simplify right side
    263,152.92x = 48,493,747,129.50
  5. Step 5: Solve for x
    x = 48,493,747,129.50/263,152.92
  6. Step 6: Final answer
    x = 184,279.72

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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.