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Finding the Fourth Proportional to 276,842.70, 414,279.90 and 192,205.80

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Solution

The fourth proportional to 276,842.70, 414,279.90 and 192,205.80 is: 287,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,842.70 : 414,279.90 = 192,205.80 : x
  2. Step 2: Convert to fraction form
    276,842.70/414,279.90 = 192,205.80/x
  3. Step 3: Cross multiply
    276,842.70x = 414,279.90 × 192,205.80
  4. Step 4: Simplify right side
    276,842.70x = 79,626,999,603.42
  5. Step 5: Solve for x
    x = 79,626,999,603.42/276,842.70
  6. Step 6: Final answer
    x = 287,625.43

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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.