Home / 262,489,012.66-393,728,450.55-78,381,234.46

Finding the Fourth Proportional to 262,489,012.66, 393,728,450.55 and 78,381,234.46

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Solution

The fourth proportional to 262,489,012.66, 393,728,450.55 and 78,381,234.46 is: 117,570,338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,489,012.66 : 393,728,450.55 = 78,381,234.46 : x
  2. Step 2: Convert to fraction form
    262,489,012.66/393,728,450.55 = 78,381,234.46/x
  3. Step 3: Cross multiply
    262,489,012.66x = 393,728,450.55 × 78,381,234.46
  4. Step 4: Simplify right side
    262,489,012.66x = 30,860,921,996,132,064
  5. Step 5: Solve for x
    x = 30,860,921,996,132,064/262,489,012.66
  6. Step 6: Final answer
    x = 117,570,338.21

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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.