Home / 212,629.19-318,833.04-100,279.25

Finding the Fourth Proportional to 212,629.19, 318,833.04 and 100,279.25

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Solution

The fourth proportional to 212,629.19, 318,833.04 and 100,279.25 is: 150,366.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,629.19 : 318,833.04 = 100,279.25 : x
  2. Step 2: Convert to fraction form
    212,629.19/318,833.04 = 100,279.25/x
  3. Step 3: Cross multiply
    212,629.19x = 318,833.04 × 100,279.25
  4. Step 4: Simplify right side
    212,629.19x = 31,972,336,532.25
  5. Step 5: Solve for x
    x = 31,972,336,532.25/212,629.19
  6. Step 6: Final answer
    x = 150,366.64

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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.