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Finding the Fourth Proportional to 309,620.58, 426,880.83 and 200,532.41

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Solution

The fourth proportional to 309,620.58, 426,880.83 and 200,532.41 is: 276,478.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,620.58 : 426,880.83 = 200,532.41 : x
  2. Step 2: Convert to fraction form
    309,620.58/426,880.83 = 200,532.41/x
  3. Step 3: Cross multiply
    309,620.58x = 426,880.83 × 200,532.41
  4. Step 4: Simplify right side
    309,620.58x = 85,603,441,841.10
  5. Step 5: Solve for x
    x = 85,603,441,841.10/309,620.58
  6. Step 6: Final answer
    x = 276,478.53

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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.