Home / 212,135.81-318,786.93-198,265.37

Finding the Fourth Proportional to 212,135.81, 318,786.93 and 198,265.37

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Solution

The fourth proportional to 212,135.81, 318,786.93 and 198,265.37 is: 297,943.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,135.81 : 318,786.93 = 198,265.37 : x
  2. Step 2: Convert to fraction form
    212,135.81/318,786.93 = 198,265.37/x
  3. Step 3: Cross multiply
    212,135.81x = 318,786.93 × 198,265.37
  4. Step 4: Simplify right side
    212,135.81x = 63,204,407,033.68
  5. Step 5: Solve for x
    x = 63,204,407,033.68/212,135.81
  6. Step 6: Final answer
    x = 297,943.14

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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.