Home / 311,851.20-467,806.32-87,211.60

Finding the Fourth Proportional to 311,851.20, 467,806.32 and 87,211.60

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Solution

The fourth proportional to 311,851.20, 467,806.32 and 87,211.60 is: 130,825.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,851.20 : 467,806.32 = 87,211.60 : x
  2. Step 2: Convert to fraction form
    311,851.20/467,806.32 = 87,211.60/x
  3. Step 3: Cross multiply
    311,851.20x = 467,806.32 × 87,211.60
  4. Step 4: Simplify right side
    311,851.20x = 40,798,137,657.31
  5. Step 5: Solve for x
    x = 40,798,137,657.31/311,851.20
  6. Step 6: Final answer
    x = 130,825.66

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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.