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Finding the Fourth Proportional to 276,620.40, 414,930.60 and 272,683.80

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Solution

The fourth proportional to 276,620.40, 414,930.60 and 272,683.80 is: 409,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,620.40 : 414,930.60 = 272,683.80 : x
  2. Step 2: Convert to fraction form
    276,620.40/414,930.60 = 272,683.80/x
  3. Step 3: Cross multiply
    276,620.40x = 414,930.60 × 272,683.80
  4. Step 4: Simplify right side
    276,620.40x = 113,144,852,744.28
  5. Step 5: Solve for x
    x = 113,144,852,744.28/276,620.40
  6. Step 6: Final answer
    x = 409,025.70

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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.