Home / 211,404.78-291,736.42-115,911.32

Finding the Fourth Proportional to 211,404.78, 291,736.42 and 115,911.32

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Solution

The fourth proportional to 211,404.78, 291,736.42 and 115,911.32 is: 159,956.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,404.78 : 291,736.42 = 115,911.32 : x
  2. Step 2: Convert to fraction form
    211,404.78/291,736.42 = 115,911.32/x
  3. Step 3: Cross multiply
    211,404.78x = 291,736.42 × 115,911.32
  4. Step 4: Simplify right side
    211,404.78x = 33,815,551,785.81
  5. Step 5: Solve for x
    x = 33,815,551,785.81/211,404.78
  6. Step 6: Final answer
    x = 159,956.42

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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.