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Finding the Fourth Proportional to 330,825.80, 496,238.70 and 131,079.80

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Solution

The fourth proportional to 330,825.80, 496,238.70 and 131,079.80 is: 196,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,825.80 : 496,238.70 = 131,079.80 : x
  2. Step 2: Convert to fraction form
    330,825.80/496,238.70 = 131,079.80/x
  3. Step 3: Cross multiply
    330,825.80x = 496,238.70 × 131,079.80
  4. Step 4: Simplify right side
    330,825.80x = 65,046,869,548.26
  5. Step 5: Solve for x
    x = 65,046,869,548.26/330,825.80
  6. Step 6: Final answer
    x = 196,619.70

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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.