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Finding the Fourth Proportional to 276,482.57, 381,546.72 and 155,625.71

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Solution

The fourth proportional to 276,482.57, 381,546.72 and 155,625.71 is: 214,763.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,482.57 : 381,546.72 = 155,625.71 : x
  2. Step 2: Convert to fraction form
    276,482.57/381,546.72 = 155,625.71/x
  3. Step 3: Cross multiply
    276,482.57x = 381,546.72 × 155,625.71
  4. Step 4: Simplify right side
    276,482.57x = 59,378,477,290.44
  5. Step 5: Solve for x
    x = 59,378,477,290.44/276,482.57
  6. Step 6: Final answer
    x = 214,763.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.