Home / 212,022-318,033.72-64,278

Finding the Fourth Proportional to 212,022, 318,033.72 and 64,278

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Solution

The fourth proportional to 212,022, 318,033.72 and 64,278 is: 96,417.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,022 : 318,033.72 = 64,278 : x
  2. Step 2: Convert to fraction form
    212,022/318,033.72 = 64,278/x
  3. Step 3: Cross multiply
    212,022x = 318,033.72 × 64,278
  4. Step 4: Simplify right side
    212,022x = 20,442,571,454.16
  5. Step 5: Solve for x
    x = 20,442,571,454.16/212,022
  6. Step 6: Final answer
    x = 96,417.22

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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.