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Finding the Fourth Proportional to 266,536.56, 399,669 and 88,979.76

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Solution

The fourth proportional to 266,536.56, 399,669 and 88,979.76 is: 133,424.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,536.56 : 399,669 = 88,979.76 : x
  2. Step 2: Convert to fraction form
    266,536.56/399,669 = 88,979.76/x
  3. Step 3: Cross multiply
    266,536.56x = 399,669 × 88,979.76
  4. Step 4: Simplify right side
    266,536.56x = 35,562,451,699.44
  5. Step 5: Solve for x
    x = 35,562,451,699.44/266,536.56
  6. Step 6: Final answer
    x = 133,424.29

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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.