Home / 211,022.91-291,218.96-115,530.29

Finding the Fourth Proportional to 211,022.91, 291,218.96 and 115,530.29

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Solution

The fourth proportional to 211,022.91, 291,218.96 and 115,530.29 is: 159,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,022.91 : 291,218.96 = 115,530.29 : x
  2. Step 2: Convert to fraction form
    211,022.91/291,218.96 = 115,530.29/x
  3. Step 3: Cross multiply
    211,022.91x = 291,218.96 × 115,530.29
  4. Step 4: Simplify right side
    211,022.91x = 33,644,610,902.30
  5. Step 5: Solve for x
    x = 33,644,610,902.30/211,022.91
  6. Step 6: Final answer
    x = 159,435.82

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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.