Home / 212,382.72-318,629.24-79,263.98

Finding the Fourth Proportional to 212,382.72, 318,629.24 and 79,263.98

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Solution

The fourth proportional to 212,382.72, 318,629.24 and 79,263.98 is: 118,916.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,382.72 : 318,629.24 = 79,263.98 : x
  2. Step 2: Convert to fraction form
    212,382.72/318,629.24 = 79,263.98/x
  3. Step 3: Cross multiply
    212,382.72x = 318,629.24 × 79,263.98
  4. Step 4: Simplify right side
    212,382.72x = 25,255,821,706.78
  5. Step 5: Solve for x
    x = 25,255,821,706.78/212,382.72
  6. Step 6: Final answer
    x = 118,916.56

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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.