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Finding the Fourth Proportional to 266,198.20, 399,377.34 and 159,699.40

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Solution

The fourth proportional to 266,198.20, 399,377.34 and 159,699.40 is: 239,597.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,198.20 : 399,377.34 = 159,699.40 : x
  2. Step 2: Convert to fraction form
    266,198.20/399,377.34 = 159,699.40/x
  3. Step 3: Cross multiply
    266,198.20x = 399,377.34 × 159,699.40
  4. Step 4: Simplify right side
    266,198.20x = 63,780,321,571.60
  5. Step 5: Solve for x
    x = 63,780,321,571.60/266,198.20
  6. Step 6: Final answer
    x = 239,597.12

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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.