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Finding the Fourth Proportional to 215,614.31, 323,063.93 and 131,118.89

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Solution

The fourth proportional to 215,614.31, 323,063.93 and 131,118.89 is: 196,460.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,614.31 : 323,063.93 = 131,118.89 : x
  2. Step 2: Convert to fraction form
    215,614.31/323,063.93 = 131,118.89/x
  3. Step 3: Cross multiply
    215,614.31x = 323,063.93 × 131,118.89
  4. Step 4: Simplify right side
    215,614.31x = 42,359,783,900.64
  5. Step 5: Solve for x
    x = 42,359,783,900.64/215,614.31
  6. Step 6: Final answer
    x = 196,460.91

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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.