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Finding the Fourth Proportional to 370,485.54, 511,270.55 and 200,719.67

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Solution

The fourth proportional to 370,485.54, 511,270.55 and 200,719.67 is: 276,993.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,485.54 : 511,270.55 = 200,719.67 : x
  2. Step 2: Convert to fraction form
    370,485.54/511,270.55 = 200,719.67/x
  3. Step 3: Cross multiply
    370,485.54x = 511,270.55 × 200,719.67
  4. Step 4: Simplify right side
    370,485.54x = 102,622,053,269.47
  5. Step 5: Solve for x
    x = 102,622,053,269.47/370,485.54
  6. Step 6: Final answer
    x = 276,993.41

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1.5x scale

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.