Home / 211,986.54-317,990.76-54,216.36

Finding the Fourth Proportional to 211,986.54, 317,990.76 and 54,216.36

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Solution

The fourth proportional to 211,986.54, 317,990.76 and 54,216.36 is: 81,327.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,986.54 : 317,990.76 = 54,216.36 : x
  2. Step 2: Convert to fraction form
    211,986.54/317,990.76 = 54,216.36/x
  3. Step 3: Cross multiply
    211,986.54x = 317,990.76 × 54,216.36
  4. Step 4: Simplify right side
    211,986.54x = 17,240,301,520.83
  5. Step 5: Solve for x
    x = 17,240,301,520.83/211,986.54
  6. Step 6: Final answer
    x = 81,327.34

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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.