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Finding the Fourth Proportional to 266,398.44, 399,597.64 and 108,639.16

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Solution

The fourth proportional to 266,398.44, 399,597.64 and 108,639.16 is: 162,958.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,398.44 : 399,597.64 = 108,639.16 : x
  2. Step 2: Convert to fraction form
    266,398.44/399,597.64 = 108,639.16/x
  3. Step 3: Cross multiply
    266,398.44x = 399,597.64 × 108,639.16
  4. Step 4: Simplify right side
    266,398.44x = 43,411,951,947.58
  5. Step 5: Solve for x
    x = 43,411,951,947.58/266,398.44
  6. Step 6: Final answer
    x = 162,958.73

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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.