Home / 280,774.12-421,137.52-120,843.60

Finding the Fourth Proportional to 280,774.12, 421,137.52 and 120,843.60

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Solution

The fourth proportional to 280,774.12, 421,137.52 and 120,843.60 is: 181,255.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,774.12 : 421,137.52 = 120,843.60 : x
  2. Step 2: Convert to fraction form
    280,774.12/421,137.52 = 120,843.60/x
  3. Step 3: Cross multiply
    280,774.12x = 421,137.52 × 120,843.60
  4. Step 4: Simplify right side
    280,774.12x = 50,891,771,301.97
  5. Step 5: Solve for x
    x = 50,891,771,301.97/280,774.12
  6. Step 6: Final answer
    x = 181,255.21

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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.