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Finding the Fourth Proportional to 312,661.91, 468,989.44 and 76,004.81

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Solution

The fourth proportional to 312,661.91, 468,989.44 and 76,004.81 is: 114,006.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,661.91 : 468,989.44 = 76,004.81 : x
  2. Step 2: Convert to fraction form
    312,661.91/468,989.44 = 76,004.81/x
  3. Step 3: Cross multiply
    312,661.91x = 468,989.44 × 76,004.81
  4. Step 4: Simplify right side
    312,661.91x = 35,645,455,568.55
  5. Step 5: Solve for x
    x = 35,645,455,568.55/312,661.91
  6. Step 6: Final answer
    x = 114,006.39

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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.