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Finding the Fourth Proportional to 321,231.93, 481,804.15 and 84,554.79

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Solution

The fourth proportional to 321,231.93, 481,804.15 and 84,554.79 is: 126,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,231.93 : 481,804.15 = 84,554.79 : x
  2. Step 2: Convert to fraction form
    321,231.93/481,804.15 = 84,554.79/x
  3. Step 3: Cross multiply
    321,231.93x = 481,804.15 × 84,554.79
  4. Step 4: Simplify right side
    321,231.93x = 40,738,848,724.38
  5. Step 5: Solve for x
    x = 40,738,848,724.38/321,231.93
  6. Step 6: Final answer
    x = 126,820.67

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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.