Home / 280,331.46-420,066.62-190,257.12

Finding the Fourth Proportional to 280,331.46, 420,066.62 and 190,257.12

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Solution

The fourth proportional to 280,331.46, 420,066.62 and 190,257.12 is: 285,093.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,331.46 : 420,066.62 = 190,257.12 : x
  2. Step 2: Convert to fraction form
    280,331.46/420,066.62 = 190,257.12/x
  3. Step 3: Cross multiply
    280,331.46x = 420,066.62 × 190,257.12
  4. Step 4: Simplify right side
    280,331.46x = 79,920,665,329.33
  5. Step 5: Solve for x
    x = 79,920,665,329.33/280,331.46
  6. Step 6: Final answer
    x = 285,093.46

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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.