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Finding the Fourth Proportional to 308,245.06, 462,367.60 and 86,629.06

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Solution

The fourth proportional to 308,245.06, 462,367.60 and 86,629.06 is: 129,943.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,245.06 : 462,367.60 = 86,629.06 : x
  2. Step 2: Convert to fraction form
    308,245.06/462,367.60 = 86,629.06/x
  3. Step 3: Cross multiply
    308,245.06x = 462,367.60 × 86,629.06
  4. Step 4: Simplify right side
    308,245.06x = 40,054,470,562.46
  5. Step 5: Solve for x
    x = 40,054,470,562.46/308,245.06
  6. Step 6: Final answer
    x = 129,943.59

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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.