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Finding the Fourth Proportional to 266,263.39, 399,161.80 and 100,168.03

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Solution

The fourth proportional to 266,263.39, 399,161.80 and 100,168.03 is: 150,164.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,263.39 : 399,161.80 = 100,168.03 : x
  2. Step 2: Convert to fraction form
    266,263.39/399,161.80 = 100,168.03/x
  3. Step 3: Cross multiply
    266,263.39x = 399,161.80 × 100,168.03
  4. Step 4: Simplify right side
    266,263.39x = 39,983,251,157.25
  5. Step 5: Solve for x
    x = 39,983,251,157.25/266,263.39
  6. Step 6: Final answer
    x = 150,164.28

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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.