Home / 347,785.20-520,986.60-199,868.40

Finding the Fourth Proportional to 347,785.20, 520,986.60 and 199,868.40

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Solution

The fourth proportional to 347,785.20, 520,986.60 and 199,868.40 is: 299,405.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,785.20 : 520,986.60 = 199,868.40 : x
  2. Step 2: Convert to fraction form
    347,785.20/520,986.60 = 199,868.40/x
  3. Step 3: Cross multiply
    347,785.20x = 520,986.60 × 199,868.40
  4. Step 4: Simplify right side
    347,785.20x = 104,128,758,163.44
  5. Step 5: Solve for x
    x = 104,128,758,163.44/347,785.20
  6. Step 6: Final answer
    x = 299,405.37

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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.