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Finding the Fourth Proportional to 255,014.54, 351,915.17 and 140,286.48

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Solution

The fourth proportional to 255,014.54, 351,915.17 and 140,286.48 is: 193,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,014.54 : 351,915.17 = 140,286.48 : x
  2. Step 2: Convert to fraction form
    255,014.54/351,915.17 = 140,286.48/x
  3. Step 3: Cross multiply
    255,014.54x = 351,915.17 × 140,286.48
  4. Step 4: Simplify right side
    255,014.54x = 49,368,938,436.79
  5. Step 5: Solve for x
    x = 49,368,938,436.79/255,014.54
  6. Step 6: Final answer
    x = 193,592.64

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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.