Home / 215,876.58-323,394.12-131,427.36

Finding the Fourth Proportional to 215,876.58, 323,394.12 and 131,427.36

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Solution

The fourth proportional to 215,876.58, 323,394.12 and 131,427.36 is: 196,884.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,876.58 : 323,394.12 = 131,427.36 : x
  2. Step 2: Convert to fraction form
    215,876.58/323,394.12 = 131,427.36/x
  3. Step 3: Cross multiply
    215,876.58x = 323,394.12 × 131,427.36
  4. Step 4: Simplify right side
    215,876.58x = 42,502,835,431.12
  5. Step 5: Solve for x
    x = 42,502,835,431.12/215,876.58
  6. Step 6: Final answer
    x = 196,884.88

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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.