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Finding the Fourth Proportional to 197,679.40, 296,388.06 and 108,975.40

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Solution

The fourth proportional to 197,679.40, 296,388.06 and 108,975.40 is: 163,390.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,679.40 : 296,388.06 = 108,975.40 : x
  2. Step 2: Convert to fraction form
    197,679.40/296,388.06 = 108,975.40/x
  3. Step 3: Cross multiply
    197,679.40x = 296,388.06 × 108,975.40
  4. Step 4: Simplify right side
    197,679.40x = 32,299,007,393.72
  5. Step 5: Solve for x
    x = 32,299,007,393.72/197,679.40
  6. Step 6: Final answer
    x = 163,390.86

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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.