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Finding the Fourth Proportional to 370,485.73, 511,270.81 and 200,719.86

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Solution

The fourth proportional to 370,485.73, 511,270.81 and 200,719.86 is: 276,993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,485.73 : 511,270.81 = 200,719.86 : x
  2. Step 2: Convert to fraction form
    370,485.73/511,270.81 = 200,719.86/x
  3. Step 3: Cross multiply
    370,485.73x = 511,270.81 × 200,719.86
  4. Step 4: Simplify right side
    370,485.73x = 102,622,202,848.93
  5. Step 5: Solve for x
    x = 102,622,202,848.93/370,485.73
  6. Step 6: Final answer
    x = 276,993.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.