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Finding the Fourth Proportional to 370,449.20, 511,219.80 and 200,683.28

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Solution

The fourth proportional to 370,449.20, 511,219.80 and 200,683.28 is: 276,942.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,449.20 : 511,219.80 = 200,683.28 : x
  2. Step 2: Convert to fraction form
    370,449.20/511,219.80 = 200,683.28/x
  3. Step 3: Cross multiply
    370,449.20x = 511,219.80 × 200,683.28
  4. Step 4: Simplify right side
    370,449.20x = 102,593,266,264.94
  5. Step 5: Solve for x
    x = 102,593,266,264.94/370,449.20
  6. Step 6: Final answer
    x = 276,942.87

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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.