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Finding the Fourth Proportional to 355,083.75, 490,015.55 and 193,939.18

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Solution

The fourth proportional to 355,083.75, 490,015.55 and 193,939.18 is: 267,636.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,083.75 : 490,015.55 = 193,939.18 : x
  2. Step 2: Convert to fraction form
    355,083.75/490,015.55 = 193,939.18/x
  3. Step 3: Cross multiply
    355,083.75x = 490,015.55 × 193,939.18
  4. Step 4: Simplify right side
    355,083.75x = 95,033,213,214.06
  5. Step 5: Solve for x
    x = 95,033,213,214.06/355,083.75
  6. Step 6: Final answer
    x = 267,636.05

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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.