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Finding the Fourth Proportional to 355,297.94, 490,290.49 and 194,154.31

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Solution

The fourth proportional to 355,297.94, 490,290.49 and 194,154.31 is: 267,921.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,297.94 : 490,290.49 = 194,154.31 : x
  2. Step 2: Convert to fraction form
    355,297.94/490,290.49 = 194,154.31/x
  3. Step 3: Cross multiply
    355,297.94x = 490,290.49 × 194,154.31
  4. Step 4: Simplify right side
    355,297.94x = 95,192,010,074.40
  5. Step 5: Solve for x
    x = 95,192,010,074.40/355,297.94
  6. Step 6: Final answer
    x = 267,921.65

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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.