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Finding the Fourth Proportional to 276,044.85, 381,130.73 and 211,400.03

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Solution

The fourth proportional to 276,044.85, 381,130.73 and 211,400.03 is: 291,876.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,044.85 : 381,130.73 = 211,400.03 : x
  2. Step 2: Convert to fraction form
    276,044.85/381,130.73 = 211,400.03/x
  3. Step 3: Cross multiply
    276,044.85x = 381,130.73 × 211,400.03
  4. Step 4: Simplify right side
    276,044.85x = 80,571,049,511.43
  5. Step 5: Solve for x
    x = 80,571,049,511.43/276,044.85
  6. Step 6: Final answer
    x = 291,876.66

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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.