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Finding the Fourth Proportional to 325,981.60, 488,583.60 and 168,128.80

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Solution

The fourth proportional to 325,981.60, 488,583.60 and 168,128.80 is: 251,992.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,981.60 : 488,583.60 = 168,128.80 : x
  2. Step 2: Convert to fraction form
    325,981.60/488,583.60 = 168,128.80/x
  3. Step 3: Cross multiply
    325,981.60x = 488,583.60 × 168,128.80
  4. Step 4: Simplify right side
    325,981.60x = 82,144,974,367.68
  5. Step 5: Solve for x
    x = 82,144,974,367.68/325,981.60
  6. Step 6: Final answer
    x = 251,992.67

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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.