Home / 280,976.76-421,021.26-228,128.04

Finding the Fourth Proportional to 280,976.76, 421,021.26 and 228,128.04

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Solution

The fourth proportional to 280,976.76, 421,021.26 and 228,128.04 is: 341,831.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,976.76 : 421,021.26 = 228,128.04 : x
  2. Step 2: Convert to fraction form
    280,976.76/421,021.26 = 228,128.04/x
  3. Step 3: Cross multiply
    280,976.76x = 421,021.26 × 228,128.04
  4. Step 4: Simplify right side
    280,976.76x = 96,046,754,842.13
  5. Step 5: Solve for x
    x = 96,046,754,842.13/280,976.76
  6. Step 6: Final answer
    x = 341,831.67

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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.