Home / 211,419.72-291,758.36-115,932.47

Finding the Fourth Proportional to 211,419.72, 291,758.36 and 115,932.47

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Solution

The fourth proportional to 211,419.72, 291,758.36 and 115,932.47 is: 159,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,419.72 : 291,758.36 = 115,932.47 : x
  2. Step 2: Convert to fraction form
    211,419.72/291,758.36 = 115,932.47/x
  3. Step 3: Cross multiply
    211,419.72x = 291,758.36 × 115,932.47
  4. Step 4: Simplify right side
    211,419.72x = 33,824,265,279.50
  5. Step 5: Solve for x
    x = 33,824,265,279.50/211,419.72
  6. Step 6: Final answer
    x = 159,986.33

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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.