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Finding the Fourth Proportional to 312,576.75, 468,810.79 and 87,883.85

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Solution

The fourth proportional to 312,576.75, 468,810.79 and 87,883.85 is: 131,810.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,576.75 : 468,810.79 = 87,883.85 : x
  2. Step 2: Convert to fraction form
    312,576.75/468,810.79 = 87,883.85/x
  3. Step 3: Cross multiply
    312,576.75x = 468,810.79 × 87,883.85
  4. Step 4: Simplify right side
    312,576.75x = 41,200,899,087.96
  5. Step 5: Solve for x
    x = 41,200,899,087.96/312,576.75
  6. Step 6: Final answer
    x = 131,810.51

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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.