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Finding the Fourth Proportional to 200,403.54, 300,619.89 and 67,282.67

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Solution

The fourth proportional to 200,403.54, 300,619.89 and 67,282.67 is: 100,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,403.54 : 300,619.89 = 67,282.67 : x
  2. Step 2: Convert to fraction form
    200,403.54/300,619.89 = 67,282.67/x
  3. Step 3: Cross multiply
    200,403.54x = 300,619.89 × 67,282.67
  4. Step 4: Simplify right side
    200,403.54x = 20,226,509,605.86
  5. Step 5: Solve for x
    x = 20,226,509,605.86/200,403.54
  6. Step 6: Final answer
    x = 100,928.90

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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.