Home / 207,621.60-311,317.20-82,821.60

Finding the Fourth Proportional to 207,621.60, 311,317.20 and 82,821.60

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Solution

The fourth proportional to 207,621.60, 311,317.20 and 82,821.60 is: 124,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,621.60 : 311,317.20 = 82,821.60 : x
  2. Step 2: Convert to fraction form
    207,621.60/311,317.20 = 82,821.60/x
  3. Step 3: Cross multiply
    207,621.60x = 311,317.20 × 82,821.60
  4. Step 4: Simplify right side
    207,621.60x = 25,783,788,611.52
  5. Step 5: Solve for x
    x = 25,783,788,611.52/207,621.60
  6. Step 6: Final answer
    x = 124,186.45

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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.