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Finding the Fourth Proportional to 354,559.72, 489,371.31 and 225,472.03

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Solution

The fourth proportional to 354,559.72, 489,371.31 and 225,472.03 is: 311,201.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,559.72 : 489,371.31 = 225,472.03 : x
  2. Step 2: Convert to fraction form
    354,559.72/489,371.31 = 225,472.03/x
  3. Step 3: Cross multiply
    354,559.72x = 489,371.31 × 225,472.03
  4. Step 4: Simplify right side
    354,559.72x = 110,339,542,689.46
  5. Step 5: Solve for x
    x = 110,339,542,689.46/354,559.72
  6. Step 6: Final answer
    x = 311,201.57

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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.