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Finding the Fourth Proportional to 276,075.55, 414,122.52 and 76,379.21

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Solution

The fourth proportional to 276,075.55, 414,122.52 and 76,379.21 is: 114,571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,075.55 : 414,122.52 = 76,379.21 : x
  2. Step 2: Convert to fraction form
    276,075.55/414,122.52 = 76,379.21/x
  3. Step 3: Cross multiply
    276,075.55x = 414,122.52 × 76,379.21
  4. Step 4: Simplify right side
    276,075.55x = 31,630,350,920.81
  5. Step 5: Solve for x
    x = 31,630,350,920.81/276,075.55
  6. Step 6: Final answer
    x = 114,571.36

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1.5x scale

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.