Home / 207,628,912.80-311,443,369.20-54,290,469.60

Finding the Fourth Proportional to 207,628,912.80, 311,443,369.20 and 54,290,469.60

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Solution

The fourth proportional to 207,628,912.80, 311,443,369.20 and 54,290,469.60 is: 81,435,704.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,628,912.80 : 311,443,369.20 = 54,290,469.60 : x
  2. Step 2: Convert to fraction form
    207,628,912.80/311,443,369.20 = 54,290,469.60/x
  3. Step 3: Cross multiply
    207,628,912.80x = 311,443,369.20 × 54,290,469.60
  4. Step 4: Simplify right side
    207,628,912.80x = 16,908,406,767,674,176
  5. Step 5: Solve for x
    x = 16,908,406,767,674,176/207,628,912.80
  6. Step 6: Final answer
    x = 81,435,704.40

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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.