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Finding the Fourth Proportional to 331,486.80, 496,644.60 and 320,523.60

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Solution

The fourth proportional to 331,486.80, 496,644.60 and 320,523.60 is: 480,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,486.80 : 496,644.60 = 320,523.60 : x
  2. Step 2: Convert to fraction form
    331,486.80/496,644.60 = 320,523.60/x
  3. Step 3: Cross multiply
    331,486.80x = 496,644.60 × 320,523.60
  4. Step 4: Simplify right side
    331,486.80x = 159,186,315,112.56
  5. Step 5: Solve for x
    x = 159,186,315,112.56/331,486.80
  6. Step 6: Final answer
    x = 480,219.17

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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.