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Finding the Fourth Proportional to 286,379.45, 395,180.50 and 165,528.56

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Solution

The fourth proportional to 286,379.45, 395,180.50 and 165,528.56 is: 228,416.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,379.45 : 395,180.50 = 165,528.56 : x
  2. Step 2: Convert to fraction form
    286,379.45/395,180.50 = 165,528.56/x
  3. Step 3: Cross multiply
    286,379.45x = 395,180.50 × 165,528.56
  4. Step 4: Simplify right side
    286,379.45x = 65,413,659,105.08
  5. Step 5: Solve for x
    x = 65,413,659,105.08/286,379.45
  6. Step 6: Final answer
    x = 228,416.04

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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.