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Finding the Fourth Proportional to 355,074.57, 489,995.32 and 193,930.25

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Solution

The fourth proportional to 355,074.57, 489,995.32 and 193,930.25 is: 267,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,074.57 : 489,995.32 = 193,930.25 : x
  2. Step 2: Convert to fraction form
    355,074.57/489,995.32 = 193,930.25/x
  3. Step 3: Cross multiply
    355,074.57x = 489,995.32 × 193,930.25
  4. Step 4: Simplify right side
    355,074.57x = 95,024,914,906.43
  5. Step 5: Solve for x
    x = 95,024,914,906.43/355,074.57
  6. Step 6: Final answer
    x = 267,619.60

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1.5x scale

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.