Home / 211,021.91-291,217.58-115,529.29

Finding the Fourth Proportional to 211,021.91, 291,217.58 and 115,529.29

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Solution

The fourth proportional to 211,021.91, 291,217.58 and 115,529.29 is: 159,434.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,021.91 : 291,217.58 = 115,529.29 : x
  2. Step 2: Convert to fraction form
    211,021.91/291,217.58 = 115,529.29/x
  3. Step 3: Cross multiply
    211,021.91x = 291,217.58 × 115,529.29
  4. Step 4: Simplify right side
    211,021.91x = 33,644,159,380.46
  5. Step 5: Solve for x
    x = 33,644,159,380.46/211,021.91
  6. Step 6: Final answer
    x = 159,434.44

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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.