Home / 218,286.90-327,441.29-78,045.53

Finding the Fourth Proportional to 218,286.90, 327,441.29 and 78,045.53

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Solution

The fourth proportional to 218,286.90, 327,441.29 and 78,045.53 is: 117,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,286.90 : 327,441.29 = 78,045.53 : x
  2. Step 2: Convert to fraction form
    218,286.90/327,441.29 = 78,045.53/x
  3. Step 3: Cross multiply
    218,286.90x = 327,441.29 × 78,045.53
  4. Step 4: Simplify right side
    218,286.90x = 25,555,326,994.50
  5. Step 5: Solve for x
    x = 25,555,326,994.50/218,286.90
  6. Step 6: Final answer
    x = 117,072.20

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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.