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Finding the Fourth Proportional to 355,074.37, 489,995.06 and 193,930.07

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Solution

The fourth proportional to 355,074.37, 489,995.06 and 193,930.07 is: 267,619.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,074.37 : 489,995.06 = 193,930.07 : x
  2. Step 2: Convert to fraction form
    355,074.37/489,995.06 = 193,930.07/x
  3. Step 3: Cross multiply
    355,074.37x = 489,995.06 × 193,930.07
  4. Step 4: Simplify right side
    355,074.37x = 95,024,775,622.05
  5. Step 5: Solve for x
    x = 95,024,775,622.05/355,074.37
  6. Step 6: Final answer
    x = 267,619.36

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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.