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Finding the Fourth Proportional to 215,391.84, 323,677.98 and 203,163.72

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Solution

The fourth proportional to 215,391.84, 323,677.98 and 203,163.72 is: 305,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,391.84 : 323,677.98 = 203,163.72 : x
  2. Step 2: Convert to fraction form
    215,391.84/323,677.98 = 203,163.72/x
  3. Step 3: Cross multiply
    215,391.84x = 323,677.98 × 203,163.72
  4. Step 4: Simplify right side
    215,391.84x = 65,759,622,498.89
  5. Step 5: Solve for x
    x = 65,759,622,498.89/215,391.84
  6. Step 6: Final answer
    x = 305,302.29

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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.