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Finding the Fourth Proportional to 276,004.80, 412,970.40 and 251,121.60

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Solution

The fourth proportional to 276,004.80, 412,970.40 and 251,121.60 is: 375,739.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,004.80 : 412,970.40 = 251,121.60 : x
  2. Step 2: Convert to fraction form
    276,004.80/412,970.40 = 251,121.60/x
  3. Step 3: Cross multiply
    276,004.80x = 412,970.40 × 251,121.60
  4. Step 4: Simplify right side
    276,004.80x = 103,705,787,600.64
  5. Step 5: Solve for x
    x = 103,705,787,600.64/276,004.80
  6. Step 6: Final answer
    x = 375,739.07

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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.