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Finding the Fourth Proportional to 331,300.80, 496,365.60 and 320,337.60

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Solution

The fourth proportional to 331,300.80, 496,365.60 and 320,337.60 is: 479,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,300.80 : 496,365.60 = 320,337.60 : x
  2. Step 2: Convert to fraction form
    331,300.80/496,365.60 = 320,337.60/x
  3. Step 3: Cross multiply
    331,300.80x = 496,365.60 × 320,337.60
  4. Step 4: Simplify right side
    331,300.80x = 159,004,565,026.56
  5. Step 5: Solve for x
    x = 159,004,565,026.56/331,300.80
  6. Step 6: Final answer
    x = 479,940.18

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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.