Home / 221,090.21-331,616.78-79,040.46

Finding the Fourth Proportional to 221,090.21, 331,616.78 and 79,040.46

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Solution

The fourth proportional to 221,090.21, 331,616.78 and 79,040.46 is: 118,554.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,090.21 : 331,616.78 = 79,040.46 : x
  2. Step 2: Convert to fraction form
    221,090.21/331,616.78 = 79,040.46/x
  3. Step 3: Cross multiply
    221,090.21x = 331,616.78 × 79,040.46
  4. Step 4: Simplify right side
    221,090.21x = 26,211,142,558.94
  5. Step 5: Solve for x
    x = 26,211,142,558.94/221,090.21
  6. Step 6: Final answer
    x = 118,554.06

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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.