Home / 211,003.11-291,189.42-115,509.51

Finding the Fourth Proportional to 211,003.11, 291,189.42 and 115,509.51

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Solution

The fourth proportional to 211,003.11, 291,189.42 and 115,509.51 is: 159,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,003.11 : 291,189.42 = 115,509.51 : x
  2. Step 2: Convert to fraction form
    211,003.11/291,189.42 = 115,509.51/x
  3. Step 3: Cross multiply
    211,003.11x = 291,189.42 × 115,509.51
  4. Step 4: Simplify right side
    211,003.11x = 33,635,147,221.38
  5. Step 5: Solve for x
    x = 33,635,147,221.38/211,003.11
  6. Step 6: Final answer
    x = 159,405.93

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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.