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Finding the Fourth Proportional to 312,141.79, 468,201.73 and 87,500.44

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Solution

The fourth proportional to 312,141.79, 468,201.73 and 87,500.44 is: 131,247.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,141.79 : 468,201.73 = 87,500.44 : x
  2. Step 2: Convert to fraction form
    312,141.79/468,201.73 = 87,500.44/x
  3. Step 3: Cross multiply
    312,141.79x = 468,201.73 × 87,500.44
  4. Step 4: Simplify right side
    312,141.79x = 40,967,857,383.76
  5. Step 5: Solve for x
    x = 40,967,857,383.76/312,141.79
  6. Step 6: Final answer
    x = 131,247.59

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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.