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Finding the Fourth Proportional to 268,930.71, 403,396.34 and 69,251.54

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Solution

The fourth proportional to 268,930.71, 403,396.34 and 69,251.54 is: 103,877.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,930.71 : 403,396.34 = 69,251.54 : x
  2. Step 2: Convert to fraction form
    268,930.71/403,396.34 = 69,251.54/x
  3. Step 3: Cross multiply
    268,930.71x = 403,396.34 × 69,251.54
  4. Step 4: Simplify right side
    268,930.71x = 27,935,815,412.12
  5. Step 5: Solve for x
    x = 27,935,815,412.12/268,930.71
  6. Step 6: Final answer
    x = 103,877.37

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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.