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Finding the Fourth Proportional to 200,401.54, 300,616.89 and 67,280.67

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Solution

The fourth proportional to 200,401.54, 300,616.89 and 67,280.67 is: 100,925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,401.54 : 300,616.89 = 67,280.67 : x
  2. Step 2: Convert to fraction form
    200,401.54/300,616.89 = 67,280.67/x
  3. Step 3: Cross multiply
    200,401.54x = 300,616.89 × 67,280.67
  4. Step 4: Simplify right side
    200,401.54x = 20,225,706,524.06
  5. Step 5: Solve for x
    x = 20,225,706,524.06/200,401.54
  6. Step 6: Final answer
    x = 100,925.90

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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.