Home / 212,003.46-318,003.57-54,231.66

Finding the Fourth Proportional to 212,003.46, 318,003.57 and 54,231.66

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Solution

The fourth proportional to 212,003.46, 318,003.57 and 54,231.66 is: 81,347.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,003.46 : 318,003.57 = 54,231.66 : x
  2. Step 2: Convert to fraction form
    212,003.46/318,003.57 = 54,231.66/x
  3. Step 3: Cross multiply
    212,003.46x = 318,003.57 × 54,231.66
  4. Step 4: Simplify right side
    212,003.46x = 17,245,861,487.03
  5. Step 5: Solve for x
    x = 17,245,861,487.03/212,003.46
  6. Step 6: Final answer
    x = 81,347.08

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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.