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Finding the Fourth Proportional to 276,122.87, 414,189.44 and 86,579.00

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Solution

The fourth proportional to 276,122.87, 414,189.44 and 86,579.00 is: 129,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,122.87 : 414,189.44 = 86,579.00 : x
  2. Step 2: Convert to fraction form
    276,122.87/414,189.44 = 86,579.00/x
  3. Step 3: Cross multiply
    276,122.87x = 414,189.44 × 86,579.00
  4. Step 4: Simplify right side
    276,122.87x = 35,860,107,942.96
  5. Step 5: Solve for x
    x = 35,860,107,942.96/276,122.87
  6. Step 6: Final answer
    x = 129,870.11

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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.