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Finding the Fourth Proportional to 276,782.61, 381,958.29 and 155,962.83

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Solution

The fourth proportional to 276,782.61, 381,958.29 and 155,962.83 is: 215,227.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,782.61 : 381,958.29 = 155,962.83 : x
  2. Step 2: Convert to fraction form
    276,782.61/381,958.29 = 155,962.83/x
  3. Step 3: Cross multiply
    276,782.61x = 381,958.29 × 155,962.83
  4. Step 4: Simplify right side
    276,782.61x = 59,571,295,850.36
  5. Step 5: Solve for x
    x = 59,571,295,850.36/276,782.61
  6. Step 6: Final answer
    x = 215,227.74

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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.