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Finding the Fourth Proportional to 266,415.76, 399,279.18 and 199,329.54

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Solution

The fourth proportional to 266,415.76, 399,279.18 and 199,329.54 is: 298,736.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,415.76 : 399,279.18 = 199,329.54 : x
  2. Step 2: Convert to fraction form
    266,415.76/399,279.18 = 199,329.54/x
  3. Step 3: Cross multiply
    266,415.76x = 399,279.18 × 199,329.54
  4. Step 4: Simplify right side
    266,415.76x = 79,588,135,280.98
  5. Step 5: Solve for x
    x = 79,588,135,280.98/266,415.76
  6. Step 6: Final answer
    x = 298,736.59

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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.