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Finding the Fourth Proportional to 354,396.06, 489,059.28 and 193,252.86

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Solution

The fourth proportional to 354,396.06, 489,059.28 and 193,252.86 is: 266,684.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,396.06 : 489,059.28 = 193,252.86 : x
  2. Step 2: Convert to fraction form
    354,396.06/489,059.28 = 193,252.86/x
  3. Step 3: Cross multiply
    354,396.06x = 489,059.28 × 193,252.86
  4. Step 4: Simplify right side
    354,396.06x = 94,512,104,569.54
  5. Step 5: Solve for x
    x = 94,512,104,569.54/354,396.06
  6. Step 6: Final answer
    x = 266,684.98

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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.