Home / 211,428.30-291,770.82-115,936.56

Finding the Fourth Proportional to 211,428.30, 291,770.82 and 115,936.56

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Solution

The fourth proportional to 211,428.30, 291,770.82 and 115,936.56 is: 159,992.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,428.30 : 291,770.82 = 115,936.56 : x
  2. Step 2: Convert to fraction form
    211,428.30/291,770.82 = 115,936.56/x
  3. Step 3: Cross multiply
    211,428.30x = 291,770.82 × 115,936.56
  4. Step 4: Simplify right side
    211,428.30x = 33,826,905,179.18
  5. Step 5: Solve for x
    x = 33,826,905,179.18/211,428.30
  6. Step 6: Final answer
    x = 159,992.32

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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.