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Finding the Fourth Proportional to 276,795.22, 381,978.57 and 155,937.96

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Solution

The fourth proportional to 276,795.22, 381,978.57 and 155,937.96 is: 215,195.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,795.22 : 381,978.57 = 155,937.96 : x
  2. Step 2: Convert to fraction form
    276,795.22/381,978.57 = 155,937.96/x
  3. Step 3: Cross multiply
    276,795.22x = 381,978.57 × 155,937.96
  4. Step 4: Simplify right side
    276,795.22x = 59,564,958,969.52
  5. Step 5: Solve for x
    x = 59,564,958,969.52/276,795.22
  6. Step 6: Final answer
    x = 215,195.04

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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.