Home / 207,660,683.20-311,491,024.80-86,476,388.80

Finding the Fourth Proportional to 207,660,683.20, 311,491,024.80 and 86,476,388.80

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Solution

The fourth proportional to 207,660,683.20, 311,491,024.80 and 86,476,388.80 is: 129,714,583.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,660,683.20 : 311,491,024.80 = 86,476,388.80 : x
  2. Step 2: Convert to fraction form
    207,660,683.20/311,491,024.80 = 86,476,388.80/x
  3. Step 3: Cross multiply
    207,660,683.20x = 311,491,024.80 × 86,476,388.80
  4. Step 4: Simplify right side
    207,660,683.20x = 26,936,618,968,315,244
  5. Step 5: Solve for x
    x = 26,936,618,968,315,244/207,660,683.20
  6. Step 6: Final answer
    x = 129,714,583.20

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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.