Home / 431,388,467.70-647,082,701.55-140,265,087.90

Finding the Fourth Proportional to 431,388,467.70, 647,082,701.55 and 140,265,087.90

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Solution

The fourth proportional to 431,388,467.70, 647,082,701.55 and 140,265,087.90 is: 210,397,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,388,467.70 : 647,082,701.55 = 140,265,087.90 : x
  2. Step 2: Convert to fraction form
    431,388,467.70/647,082,701.55 = 140,265,087.90/x
  3. Step 3: Cross multiply
    431,388,467.70x = 647,082,701.55 × 140,265,087.90
  4. Step 4: Simplify right side
    431,388,467.70x = 90,763,112,011,480,208
  5. Step 5: Solve for x
    x = 90,763,112,011,480,208/431,388,467.70
  6. Step 6: Final answer
    x = 210,397,631.85

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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.