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Finding the Fourth Proportional to 354,915.06, 489,839.02 and 225,718.82

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Solution

The fourth proportional to 354,915.06, 489,839.02 and 225,718.82 is: 311,527.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,915.06 : 489,839.02 = 225,718.82 : x
  2. Step 2: Convert to fraction form
    354,915.06/489,839.02 = 225,718.82/x
  3. Step 3: Cross multiply
    354,915.06x = 489,839.02 × 225,718.82
  4. Step 4: Simplify right side
    354,915.06x = 110,565,885,584.36
  5. Step 5: Solve for x
    x = 110,565,885,584.36/354,915.06
  6. Step 6: Final answer
    x = 311,527.74

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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.