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Finding the Fourth Proportional to 303,876.44, 455,815 and 79,236.68

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Solution

The fourth proportional to 303,876.44, 455,815 and 79,236.68 is: 118,855.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,876.44 : 455,815 = 79,236.68 : x
  2. Step 2: Convert to fraction form
    303,876.44/455,815 = 79,236.68/x
  3. Step 3: Cross multiply
    303,876.44x = 455,815 × 79,236.68
  4. Step 4: Simplify right side
    303,876.44x = 36,117,267,294.20
  5. Step 5: Solve for x
    x = 36,117,267,294.20/303,876.44
  6. Step 6: Final answer
    x = 118,855.11

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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.