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Finding the Fourth Proportional to 354,558.22, 489,369.24 and 225,470.53

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Solution

The fourth proportional to 354,558.22, 489,369.24 and 225,470.53 is: 311,199.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,558.22 : 489,369.24 = 225,470.53 : x
  2. Step 2: Convert to fraction form
    354,558.22/489,369.24 = 225,470.53/x
  3. Step 3: Cross multiply
    354,558.22x = 489,369.24 × 225,470.53
  4. Step 4: Simplify right side
    354,558.22x = 110,338,341,908.50
  5. Step 5: Solve for x
    x = 110,338,341,908.50/354,558.22
  6. Step 6: Final answer
    x = 311,199.50

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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.