Home / 211,987.54-317,992.26-54,217.36

Finding the Fourth Proportional to 211,987.54, 317,992.26 and 54,217.36

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Solution

The fourth proportional to 211,987.54, 317,992.26 and 54,217.36 is: 81,328.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,987.54 : 317,992.26 = 54,217.36 : x
  2. Step 2: Convert to fraction form
    211,987.54/317,992.26 = 54,217.36/x
  3. Step 3: Cross multiply
    211,987.54x = 317,992.26 × 54,217.36
  4. Step 4: Simplify right side
    211,987.54x = 17,240,700,837.63
  5. Step 5: Solve for x
    x = 17,240,700,837.63/211,987.54
  6. Step 6: Final answer
    x = 81,328.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.