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Finding the Fourth Proportional to 286,876, 395,888.88 and 167,644

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Solution

The fourth proportional to 286,876, 395,888.88 and 167,644 is: 231,348.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,876 : 395,888.88 = 167,644 : x
  2. Step 2: Convert to fraction form
    286,876/395,888.88 = 167,644/x
  3. Step 3: Cross multiply
    286,876x = 395,888.88 × 167,644
  4. Step 4: Simplify right side
    286,876x = 66,368,395,398.72
  5. Step 5: Solve for x
    x = 66,368,395,398.72/286,876
  6. Step 6: Final answer
    x = 231,348.72

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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.