Home / 318,873.58-478,369.23-131,899.66

Finding the Fourth Proportional to 318,873.58, 478,369.23 and 131,899.66

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Solution

The fourth proportional to 318,873.58, 478,369.23 and 131,899.66 is: 197,873.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,873.58 : 478,369.23 = 131,899.66 : x
  2. Step 2: Convert to fraction form
    318,873.58/478,369.23 = 131,899.66/x
  3. Step 3: Cross multiply
    318,873.58x = 478,369.23 × 131,899.66
  4. Step 4: Simplify right side
    318,873.58x = 63,096,738,791.46
  5. Step 5: Solve for x
    x = 63,096,738,791.46/318,873.58
  6. Step 6: Final answer
    x = 197,873.84

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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.