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Finding the Fourth Proportional to 323,975.94, 485,931.09 and 87,342.54

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Solution

The fourth proportional to 323,975.94, 485,931.09 and 87,342.54 is: 131,004.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,975.94 : 485,931.09 = 87,342.54 : x
  2. Step 2: Convert to fraction form
    323,975.94/485,931.09 = 87,342.54/x
  3. Step 3: Cross multiply
    323,975.94x = 485,931.09 × 87,342.54
  4. Step 4: Simplify right side
    323,975.94x = 42,442,453,235.91
  5. Step 5: Solve for x
    x = 42,442,453,235.91/323,975.94
  6. Step 6: Final answer
    x = 131,004.96

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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.