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Finding the Fourth Proportional to 215,804.40, 323,799.89 and 115,847.87

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Solution

The fourth proportional to 215,804.40, 323,799.89 and 115,847.87 is: 173,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,804.40 : 323,799.89 = 115,847.87 : x
  2. Step 2: Convert to fraction form
    215,804.40/323,799.89 = 115,847.87/x
  3. Step 3: Cross multiply
    215,804.40x = 323,799.89 × 115,847.87
  4. Step 4: Simplify right side
    215,804.40x = 37,511,525,364.50
  5. Step 5: Solve for x
    x = 37,511,525,364.50/215,804.40
  6. Step 6: Final answer
    x = 173,821.87

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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.