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Finding the Fourth Proportional to 312,432.94, 468,576.24 and 87,814.90

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Solution

The fourth proportional to 312,432.94, 468,576.24 and 87,814.90 is: 131,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,432.94 : 468,576.24 = 87,814.90 : x
  2. Step 2: Convert to fraction form
    312,432.94/468,576.24 = 87,814.90/x
  3. Step 3: Cross multiply
    312,432.94x = 468,576.24 × 87,814.90
  4. Step 4: Simplify right side
    312,432.94x = 41,147,975,657.98
  5. Step 5: Solve for x
    x = 41,147,975,657.98/312,432.94
  6. Step 6: Final answer
    x = 131,701.78

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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.