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Finding the Fourth Proportional to 300,079.80, 450,119.70 and 193,791.60

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Solution

The fourth proportional to 300,079.80, 450,119.70 and 193,791.60 is: 290,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,079.80 : 450,119.70 = 193,791.60 : x
  2. Step 2: Convert to fraction form
    300,079.80/450,119.70 = 193,791.60/x
  3. Step 3: Cross multiply
    300,079.80x = 450,119.70 × 193,791.60
  4. Step 4: Simplify right side
    300,079.80x = 87,229,416,854.52
  5. Step 5: Solve for x
    x = 87,229,416,854.52/300,079.80
  6. Step 6: Final answer
    x = 290,687.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.