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Finding the Fourth Proportional to 270,040.40, 405,060.60 and 191,243.60

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Solution

The fourth proportional to 270,040.40, 405,060.60 and 191,243.60 is: 286,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,040.40 : 405,060.60 = 191,243.60 : x
  2. Step 2: Convert to fraction form
    270,040.40/405,060.60 = 191,243.60/x
  3. Step 3: Cross multiply
    270,040.40x = 405,060.60 × 191,243.60
  4. Step 4: Simplify right side
    270,040.40x = 77,465,247,362.16
  5. Step 5: Solve for x
    x = 77,465,247,362.16/270,040.40
  6. Step 6: Final answer
    x = 286,865.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.