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Finding the Fourth Proportional to 331,482.80, 496,638.60 and 320,519.60

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Solution

The fourth proportional to 331,482.80, 496,638.60 and 320,519.60 is: 480,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,482.80 : 496,638.60 = 320,519.60 : x
  2. Step 2: Convert to fraction form
    331,482.80/496,638.60 = 320,519.60/x
  3. Step 3: Cross multiply
    331,482.80x = 496,638.60 × 320,519.60
  4. Step 4: Simplify right side
    331,482.80x = 159,182,405,416.56
  5. Step 5: Solve for x
    x = 159,182,405,416.56/331,482.80
  6. Step 6: Final answer
    x = 480,213.17

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1.5x scale

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.