Home / 280,297.45-420,196.20-102,763.09

Finding the Fourth Proportional to 280,297.45, 420,196.20 and 102,763.09

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Solution

The fourth proportional to 280,297.45, 420,196.20 and 102,763.09 is: 154,052.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,297.45 : 420,196.20 = 102,763.09 : x
  2. Step 2: Convert to fraction form
    280,297.45/420,196.20 = 102,763.09/x
  3. Step 3: Cross multiply
    280,297.45x = 420,196.20 × 102,763.09
  4. Step 4: Simplify right side
    280,297.45x = 43,180,659,918.26
  5. Step 5: Solve for x
    x = 43,180,659,918.26/280,297.45
  6. Step 6: Final answer
    x = 154,052.99

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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.