Home / 207,603,400.30-311,405,100.45-121,297,381.90

Finding the Fourth Proportional to 207,603,400.30, 311,405,100.45 and 121,297,381.90

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Solution

The fourth proportional to 207,603,400.30, 311,405,100.45 and 121,297,381.90 is: 181,946,072.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,603,400.30 : 311,405,100.45 = 121,297,381.90 : x
  2. Step 2: Convert to fraction form
    207,603,400.30/311,405,100.45 = 121,297,381.90/x
  3. Step 3: Cross multiply
    207,603,400.30x = 311,405,100.45 × 121,297,381.90
  4. Step 4: Simplify right side
    207,603,400.30x = 37,772,623,394,891,512
  5. Step 5: Solve for x
    x = 37,772,623,394,891,512/207,603,400.30
  6. Step 6: Final answer
    x = 181,946,072.85

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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.