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Finding the Fourth Proportional to 268,906.77, 403,265.79 and 79,316.69

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Solution

The fourth proportional to 268,906.77, 403,265.79 and 79,316.69 is: 118,947.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,906.77 : 403,265.79 = 79,316.69 : x
  2. Step 2: Convert to fraction form
    268,906.77/403,265.79 = 79,316.69/x
  3. Step 3: Cross multiply
    268,906.77x = 403,265.79 × 79,316.69
  4. Step 4: Simplify right side
    268,906.77x = 31,985,705,636.71
  5. Step 5: Solve for x
    x = 31,985,705,636.71/268,906.77
  6. Step 6: Final answer
    x = 118,947.19

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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.