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Finding the Fourth Proportional to 268,699.83, 403,035.17 and 81,696.75

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Solution

The fourth proportional to 268,699.83, 403,035.17 and 81,696.75 is: 122,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,699.83 : 403,035.17 = 81,696.75 : x
  2. Step 2: Convert to fraction form
    268,699.83/403,035.17 = 81,696.75/x
  3. Step 3: Cross multiply
    268,699.83x = 403,035.17 × 81,696.75
  4. Step 4: Simplify right side
    268,699.83x = 32,926,663,116.21
  5. Step 5: Solve for x
    x = 32,926,663,116.21/268,699.83
  6. Step 6: Final answer
    x = 122,540.69

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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.