Home / 203,515.19-280,592.85-145,441.28

Finding the Fourth Proportional to 203,515.19, 280,592.85 and 145,441.28

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Solution

The fourth proportional to 203,515.19, 280,592.85 and 145,441.28 is: 200,524.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,515.19 : 280,592.85 = 145,441.28 : x
  2. Step 2: Convert to fraction form
    203,515.19/280,592.85 = 145,441.28/x
  3. Step 3: Cross multiply
    203,515.19x = 280,592.85 × 145,441.28
  4. Step 4: Simplify right side
    203,515.19x = 40,809,783,964.33
  5. Step 5: Solve for x
    x = 40,809,783,964.33/203,515.19
  6. Step 6: Final answer
    x = 200,524.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.