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Finding the Fourth Proportional to 289,939.82, 434,939.58 and 100,399.82

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Solution

The fourth proportional to 289,939.82, 434,939.58 and 100,399.82 is: 150,610.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,939.82 : 434,939.58 = 100,399.82 : x
  2. Step 2: Convert to fraction form
    289,939.82/434,939.58 = 100,399.82/x
  3. Step 3: Cross multiply
    289,939.82x = 434,939.58 × 100,399.82
  4. Step 4: Simplify right side
    289,939.82x = 43,667,853,368.18
  5. Step 5: Solve for x
    x = 43,667,853,368.18/289,939.82
  6. Step 6: Final answer
    x = 150,610.06

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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.