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Finding the Fourth Proportional to 268,906.59, 403,265.75 and 79,316.73

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Solution

The fourth proportional to 268,906.59, 403,265.75 and 79,316.73 is: 118,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,906.59 : 403,265.75 = 79,316.73 : x
  2. Step 2: Convert to fraction form
    268,906.59/403,265.75 = 79,316.73/x
  3. Step 3: Cross multiply
    268,906.59x = 403,265.75 × 79,316.73
  4. Step 4: Simplify right side
    268,906.59x = 31,985,720,214.41
  5. Step 5: Solve for x
    x = 31,985,720,214.41/268,906.59
  6. Step 6: Final answer
    x = 118,947.33

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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.