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Finding the Fourth Proportional to 199,522.40, 298,894.80 and 120,401.60

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Solution

The fourth proportional to 199,522.40, 298,894.80 and 120,401.60 is: 180,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,522.40 : 298,894.80 = 120,401.60 : x
  2. Step 2: Convert to fraction form
    199,522.40/298,894.80 = 120,401.60/x
  3. Step 3: Cross multiply
    199,522.40x = 298,894.80 × 120,401.60
  4. Step 4: Simplify right side
    199,522.40x = 35,987,412,151.68
  5. Step 5: Solve for x
    x = 35,987,412,151.68/199,522.40
  6. Step 6: Final answer
    x = 180,367.78

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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.