Home / 211,400.28-291,730.31-115,906.75

Finding the Fourth Proportional to 211,400.28, 291,730.31 and 115,906.75

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Solution

The fourth proportional to 211,400.28, 291,730.31 and 115,906.75 is: 159,950.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,400.28 : 291,730.31 = 115,906.75 : x
  2. Step 2: Convert to fraction form
    211,400.28/291,730.31 = 115,906.75/x
  3. Step 3: Cross multiply
    211,400.28x = 291,730.31 × 115,906.75
  4. Step 4: Simplify right side
    211,400.28x = 33,813,511,234.38
  5. Step 5: Solve for x
    x = 33,813,511,234.38/211,400.28
  6. Step 6: Final answer
    x = 159,950.17

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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.