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Finding the Fourth Proportional to 331,294.80, 496,356.60 and 320,331.60

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Solution

The fourth proportional to 331,294.80, 496,356.60 and 320,331.60 is: 479,931.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,294.80 : 496,356.60 = 320,331.60 : x
  2. Step 2: Convert to fraction form
    331,294.80/496,356.60 = 320,331.60/x
  3. Step 3: Cross multiply
    331,294.80x = 496,356.60 × 320,331.60
  4. Step 4: Simplify right side
    331,294.80x = 158,998,703,848.56
  5. Step 5: Solve for x
    x = 158,998,703,848.56/331,294.80
  6. Step 6: Final answer
    x = 479,931.18

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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.