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Finding the Fourth Proportional to 347,682.20, 520,745.70 and 339,906.20

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Solution

The fourth proportional to 347,682.20, 520,745.70 and 339,906.20 is: 509,099.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,682.20 : 520,745.70 = 339,906.20 : x
  2. Step 2: Convert to fraction form
    347,682.20/520,745.70 = 339,906.20/x
  3. Step 3: Cross multiply
    347,682.20x = 520,745.70 × 339,906.20
  4. Step 4: Simplify right side
    347,682.20x = 177,004,692,053.34
  5. Step 5: Solve for x
    x = 177,004,692,053.34/347,682.20
  6. Step 6: Final answer
    x = 509,099.09

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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.