Home / 212,629.54-318,945.66-54,859.36

Finding the Fourth Proportional to 212,629.54, 318,945.66 and 54,859.36

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Solution

The fourth proportional to 212,629.54, 318,945.66 and 54,859.36 is: 82,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,629.54 : 318,945.66 = 54,859.36 : x
  2. Step 2: Convert to fraction form
    212,629.54/318,945.66 = 54,859.36/x
  3. Step 3: Cross multiply
    212,629.54x = 318,945.66 × 54,859.36
  4. Step 4: Simplify right side
    212,629.54x = 17,497,154,782.38
  5. Step 5: Solve for x
    x = 17,497,154,782.38/212,629.54
  6. Step 6: Final answer
    x = 82,289.39

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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.