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Finding the Fourth Proportional to 331,292.80, 496,353.60 and 320,329.60

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Solution

The fourth proportional to 331,292.80, 496,353.60 and 320,329.60 is: 479,928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,292.80 : 496,353.60 = 320,329.60 : x
  2. Step 2: Convert to fraction form
    331,292.80/496,353.60 = 320,329.60/x
  3. Step 3: Cross multiply
    331,292.80x = 496,353.60 × 320,329.60
  4. Step 4: Simplify right side
    331,292.80x = 158,996,750,146.56
  5. Step 5: Solve for x
    x = 158,996,750,146.56/331,292.80
  6. Step 6: Final answer
    x = 479,928.18

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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.