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Finding the Fourth Proportional to 308,618.40, 462,846.60 and 131,034

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Solution

The fourth proportional to 308,618.40, 462,846.60 and 131,034 is: 196,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,618.40 : 462,846.60 = 131,034 : x
  2. Step 2: Convert to fraction form
    308,618.40/462,846.60 = 131,034/x
  3. Step 3: Cross multiply
    308,618.40x = 462,846.60 × 131,034
  4. Step 4: Simplify right side
    308,618.40x = 60,648,641,384.40
  5. Step 5: Solve for x
    x = 60,648,641,384.40/308,618.40
  6. Step 6: Final answer
    x = 196,516.61

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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.