Home / 212,436.80-318,271.20-123,617.60

Finding the Fourth Proportional to 212,436.80, 318,271.20 and 123,617.60

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Solution

The fourth proportional to 212,436.80, 318,271.20 and 123,617.60 is: 185,202.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,436.80 : 318,271.20 = 123,617.60 : x
  2. Step 2: Convert to fraction form
    212,436.80/318,271.20 = 123,617.60/x
  3. Step 3: Cross multiply
    212,436.80x = 318,271.20 × 123,617.60
  4. Step 4: Simplify right side
    212,436.80x = 39,343,921,893.12
  5. Step 5: Solve for x
    x = 39,343,921,893.12/212,436.80
  6. Step 6: Final answer
    x = 185,202.95

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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.