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Finding the Fourth Proportional to 320,589.42, 442,410.84 and 191,586.66

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Solution

The fourth proportional to 320,589.42, 442,410.84 and 191,586.66 is: 264,388.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,589.42 : 442,410.84 = 191,586.66 : x
  2. Step 2: Convert to fraction form
    320,589.42/442,410.84 = 191,586.66/x
  3. Step 3: Cross multiply
    320,589.42x = 442,410.84 × 191,586.66
  4. Step 4: Simplify right side
    320,589.42x = 84,760,015,183.39
  5. Step 5: Solve for x
    x = 84,760,015,183.39/320,589.42
  6. Step 6: Final answer
    x = 264,388.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.