Home / 271,811.73-405,887.10-221,990.66

Finding the Fourth Proportional to 271,811.73, 405,887.10 and 221,990.66

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Solution

The fourth proportional to 271,811.73, 405,887.10 and 221,990.66 is: 331,491.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,811.73 : 405,887.10 = 221,990.66 : x
  2. Step 2: Convert to fraction form
    271,811.73/405,887.10 = 221,990.66/x
  3. Step 3: Cross multiply
    271,811.73x = 405,887.10 × 221,990.66
  4. Step 4: Simplify right side
    271,811.73x = 90,103,143,185.05
  5. Step 5: Solve for x
    x = 90,103,143,185.05/271,811.73
  6. Step 6: Final answer
    x = 331,491.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.