Home / 211,103.19-291,322.31-115,609.05

Finding the Fourth Proportional to 211,103.19, 291,322.31 and 115,609.05

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Solution

The fourth proportional to 211,103.19, 291,322.31 and 115,609.05 is: 159,540.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,103.19 : 291,322.31 = 115,609.05 : x
  2. Step 2: Convert to fraction form
    211,103.19/291,322.31 = 115,609.05/x
  3. Step 3: Cross multiply
    211,103.19x = 291,322.31 × 115,609.05
  4. Step 4: Simplify right side
    211,103.19x = 33,679,494,924.86
  5. Step 5: Solve for x
    x = 33,679,494,924.86/211,103.19
  6. Step 6: Final answer
    x = 159,540.44

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1.5x scale

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.