Home / 209,074.88-312,032.33-188,896.78

Finding the Fourth Proportional to 209,074.88, 312,032.33 and 188,896.78

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Solution

The fourth proportional to 209,074.88, 312,032.33 and 188,896.78 is: 281,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,074.88 : 312,032.33 = 188,896.78 : x
  2. Step 2: Convert to fraction form
    209,074.88/312,032.33 = 188,896.78/x
  3. Step 3: Cross multiply
    209,074.88x = 312,032.33 × 188,896.78
  4. Step 4: Simplify right side
    209,074.88x = 58,941,902,392.90
  5. Step 5: Solve for x
    x = 58,941,902,392.90/209,074.88
  6. Step 6: Final answer
    x = 281,917.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.