Home / 212,629.57-318,953.26-79,496.35

Finding the Fourth Proportional to 212,629.57, 318,953.26 and 79,496.35

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Solution

The fourth proportional to 212,629.57, 318,953.26 and 79,496.35 is: 119,247.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,629.57 : 318,953.26 = 79,496.35 : x
  2. Step 2: Convert to fraction form
    212,629.57/318,953.26 = 79,496.35/x
  3. Step 3: Cross multiply
    212,629.57x = 318,953.26 × 79,496.35
  4. Step 4: Simplify right side
    212,629.57x = 25,355,619,292.59
  5. Step 5: Solve for x
    x = 25,355,619,292.59/212,629.57
  6. Step 6: Final answer
    x = 119,247.85

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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.