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Finding the Fourth Proportional to 266,540.76, 399,968.64 and 98,179.43

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Solution

The fourth proportional to 266,540.76, 399,968.64 and 98,179.43 is: 147,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,540.76 : 399,968.64 = 98,179.43 : x
  2. Step 2: Convert to fraction form
    266,540.76/399,968.64 = 98,179.43/x
  3. Step 3: Cross multiply
    266,540.76x = 399,968.64 × 98,179.43
  4. Step 4: Simplify right side
    266,540.76x = 39,268,691,093.23
  5. Step 5: Solve for x
    x = 39,268,691,093.23/266,540.76
  6. Step 6: Final answer
    x = 147,327.15

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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.