Home / 345,865.20-518,311.80-274,909.20

Finding the Fourth Proportional to 345,865.20, 518,311.80 and 274,909.20

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Solution

The fourth proportional to 345,865.20, 518,311.80 and 274,909.20 is: 411,977.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,865.20 : 518,311.80 = 274,909.20 : x
  2. Step 2: Convert to fraction form
    345,865.20/518,311.80 = 274,909.20/x
  3. Step 3: Cross multiply
    345,865.20x = 518,311.80 × 274,909.20
  4. Step 4: Simplify right side
    345,865.20x = 142,488,682,288.56
  5. Step 5: Solve for x
    x = 142,488,682,288.56/345,865.20
  6. Step 6: Final answer
    x = 411,977.51

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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.