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Finding the Fourth Proportional to 300,137.38, 450,039.86 and 122,768.94

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Solution

The fourth proportional to 300,137.38, 450,039.86 and 122,768.94 is: 184,085.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,137.38 : 450,039.86 = 122,768.94 : x
  2. Step 2: Convert to fraction form
    300,137.38/450,039.86 = 122,768.94/x
  3. Step 3: Cross multiply
    300,137.38x = 450,039.86 × 122,768.94
  4. Step 4: Simplify right side
    300,137.38x = 55,250,916,569.95
  5. Step 5: Solve for x
    x = 55,250,916,569.95/300,137.38
  6. Step 6: Final answer
    x = 184,085.42

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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.