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Finding the Fourth Proportional to 330,481.38, 494,953.14 and 321,390.01

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Solution

The fourth proportional to 330,481.38, 494,953.14 and 321,390.01 is: 481,337.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,481.38 : 494,953.14 = 321,390.01 : x
  2. Step 2: Convert to fraction form
    330,481.38/494,953.14 = 321,390.01/x
  3. Step 3: Cross multiply
    330,481.38x = 494,953.14 × 321,390.01
  4. Step 4: Simplify right side
    330,481.38x = 159,072,992,139.37
  5. Step 5: Solve for x
    x = 159,072,992,139.37/330,481.38
  6. Step 6: Final answer
    x = 481,337.23

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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.