Home / 280,349.10-420,093.09-190,274.85

Finding the Fourth Proportional to 280,349.10, 420,093.09 and 190,274.85

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Solution

The fourth proportional to 280,349.10, 420,093.09 and 190,274.85 is: 285,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,349.10 : 420,093.09 = 190,274.85 : x
  2. Step 2: Convert to fraction form
    280,349.10/420,093.09 = 190,274.85/x
  3. Step 3: Cross multiply
    280,349.10x = 420,093.09 × 190,274.85
  4. Step 4: Simplify right side
    280,349.10x = 79,933,149,685.79
  5. Step 5: Solve for x
    x = 79,933,149,685.79/280,349.10
  6. Step 6: Final answer
    x = 285,120.05

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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.