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Finding the Fourth Proportional to 266,853.60, 400,245.84 and 100,620

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Solution

The fourth proportional to 266,853.60, 400,245.84 and 100,620 is: 150,916.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,853.60 : 400,245.84 = 100,620 : x
  2. Step 2: Convert to fraction form
    266,853.60/400,245.84 = 100,620/x
  3. Step 3: Cross multiply
    266,853.60x = 400,245.84 × 100,620
  4. Step 4: Simplify right side
    266,853.60x = 40,272,736,420.80
  5. Step 5: Solve for x
    x = 40,272,736,420.80/266,853.60
  6. Step 6: Final answer
    x = 150,916.97

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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.