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Finding the Fourth Proportional to 289,833.12, 434,769.12 and 79,453.44

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Solution

The fourth proportional to 289,833.12, 434,769.12 and 79,453.44 is: 119,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,833.12 : 434,769.12 = 79,453.44 : x
  2. Step 2: Convert to fraction form
    289,833.12/434,769.12 = 79,453.44/x
  3. Step 3: Cross multiply
    289,833.12x = 434,769.12 × 79,453.44
  4. Step 4: Simplify right side
    289,833.12x = 34,543,902,189.77
  5. Step 5: Solve for x
    x = 34,543,902,189.77/289,833.12
  6. Step 6: Final answer
    x = 119,185.49

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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.