Home / 318,234,380.41-439,139,704.20-178,978,237.98

Finding the Fourth Proportional to 318,234,380.41, 439,139,704.20 and 178,978,237.98

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Solution

The fourth proportional to 318,234,380.41, 439,139,704.20 and 178,978,237.98 is: 246,976,616.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,234,380.41 : 439,139,704.20 = 178,978,237.98 : x
  2. Step 2: Convert to fraction form
    318,234,380.41/439,139,704.20 = 178,978,237.98/x
  3. Step 3: Cross multiply
    318,234,380.41x = 439,139,704.20 × 178,978,237.98
  4. Step 4: Simplify right side
    318,234,380.41x = 78,596,450,484,774,400
  5. Step 5: Solve for x
    x = 78,596,450,484,774,400/318,234,380.41
  6. Step 6: Final answer
    x = 246,976,616.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.