Home / 280,329.46-420,063.62-190,255.12

Finding the Fourth Proportional to 280,329.46, 420,063.62 and 190,255.12

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Solution

The fourth proportional to 280,329.46, 420,063.62 and 190,255.12 is: 285,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,329.46 : 420,063.62 = 190,255.12 : x
  2. Step 2: Convert to fraction form
    280,329.46/420,063.62 = 190,255.12/x
  3. Step 3: Cross multiply
    280,329.46x = 420,063.62 × 190,255.12
  4. Step 4: Simplify right side
    280,329.46x = 79,919,252,429.30
  5. Step 5: Solve for x
    x = 79,919,252,429.30/280,329.46
  6. Step 6: Final answer
    x = 285,090.45

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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.