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Finding the Fourth Proportional to 398,601.05, 597,903.73 and 118,120.73

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Solution

The fourth proportional to 398,601.05, 597,903.73 and 118,120.73 is: 177,181.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601.05 : 597,903.73 = 118,120.73 : x
  2. Step 2: Convert to fraction form
    398,601.05/597,903.73 = 118,120.73/x
  3. Step 3: Cross multiply
    398,601.05x = 597,903.73 × 118,120.73
  4. Step 4: Simplify right side
    398,601.05x = 70,624,821,772.50
  5. Step 5: Solve for x
    x = 70,624,821,772.50/398,601.05
  6. Step 6: Final answer
    x = 177,181.73

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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.