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Finding the Fourth Proportional to 286,563.72, 395,342.46 and 173,189.64

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Solution

The fourth proportional to 286,563.72, 395,342.46 and 173,189.64 is: 238,931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,563.72 : 395,342.46 = 173,189.64 : x
  2. Step 2: Convert to fraction form
    286,563.72/395,342.46 = 173,189.64/x
  3. Step 3: Cross multiply
    286,563.72x = 395,342.46 × 173,189.64
  4. Step 4: Simplify right side
    286,563.72x = 68,469,218,324.11
  5. Step 5: Solve for x
    x = 68,469,218,324.11/286,563.72
  6. Step 6: Final answer
    x = 238,931.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.