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Finding the Fourth Proportional to 351,659.56, 485,289.60 and 190,518.70

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Solution

The fourth proportional to 351,659.56, 485,289.60 and 190,518.70 is: 262,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,659.56 : 485,289.60 = 190,518.70 : x
  2. Step 2: Convert to fraction form
    351,659.56/485,289.60 = 190,518.70/x
  3. Step 3: Cross multiply
    351,659.56x = 485,289.60 × 190,518.70
  4. Step 4: Simplify right side
    351,659.56x = 92,456,743,715.52
  5. Step 5: Solve for x
    x = 92,456,743,715.52/351,659.56
  6. Step 6: Final answer
    x = 262,915.48

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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.