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Finding the Fourth Proportional to 201,993.50, 302,990.26 and 77,334.50

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Solution

The fourth proportional to 201,993.50, 302,990.26 and 77,334.50 is: 116,001.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,993.50 : 302,990.26 = 77,334.50 : x
  2. Step 2: Convert to fraction form
    201,993.50/302,990.26 = 77,334.50/x
  3. Step 3: Cross multiply
    201,993.50x = 302,990.26 × 77,334.50
  4. Step 4: Simplify right side
    201,993.50x = 23,431,600,261.97
  5. Step 5: Solve for x
    x = 23,431,600,261.97/201,993.50
  6. Step 6: Final answer
    x = 116,001.75

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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.