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Finding the Fourth Proportional to 312,029.68, 467,620.28 and 131,965.36

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Solution

The fourth proportional to 312,029.68, 467,620.28 and 131,965.36 is: 197,768.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,029.68 : 467,620.28 = 131,965.36 : x
  2. Step 2: Convert to fraction form
    312,029.68/467,620.28 = 131,965.36/x
  3. Step 3: Cross multiply
    312,029.68x = 467,620.28 × 131,965.36
  4. Step 4: Simplify right side
    312,029.68x = 61,709,678,593.50
  5. Step 5: Solve for x
    x = 61,709,678,593.50/312,029.68
  6. Step 6: Final answer
    x = 197,768.62

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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.