Home / 218,792.23-327,991.37-78,518.05

Finding the Fourth Proportional to 218,792.23, 327,991.37 and 78,518.05

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Solution

The fourth proportional to 218,792.23, 327,991.37 and 78,518.05 is: 117,706.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,792.23 : 327,991.37 = 78,518.05 : x
  2. Step 2: Convert to fraction form
    218,792.23/327,991.37 = 78,518.05/x
  3. Step 3: Cross multiply
    218,792.23x = 327,991.37 × 78,518.05
  4. Step 4: Simplify right side
    218,792.23x = 25,753,241,576.66
  5. Step 5: Solve for x
    x = 25,753,241,576.66/218,792.23
  6. Step 6: Final answer
    x = 117,706.38

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1.5x scale

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.