Home / 318,234,381.41-439,139,705.58-178,978,238.98

Finding the Fourth Proportional to 318,234,381.41, 439,139,705.58 and 178,978,238.98

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Solution

The fourth proportional to 318,234,381.41, 439,139,705.58 and 178,978,238.98 is: 246,976,617.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,234,381.41 : 439,139,705.58 = 178,978,238.98 : x
  2. Step 2: Convert to fraction form
    318,234,381.41/439,139,705.58 = 178,978,238.98/x
  3. Step 3: Cross multiply
    318,234,381.41x = 439,139,705.58 × 178,978,238.98
  4. Step 4: Simplify right side
    318,234,381.41x = 78,596,451,170,904,064
  5. Step 5: Solve for x
    x = 78,596,451,170,904,064/318,234,381.41
  6. Step 6: Final answer
    x = 246,976,617.75

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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.