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Finding the Fourth Proportional to 308,528.73, 462,763.93 and 98,129.61

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Solution

The fourth proportional to 308,528.73, 462,763.93 and 98,129.61 is: 147,185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,528.73 : 462,763.93 = 98,129.61 : x
  2. Step 2: Convert to fraction form
    308,528.73/462,763.93 = 98,129.61/x
  3. Step 3: Cross multiply
    308,528.73x = 462,763.93 × 98,129.61
  4. Step 4: Simplify right side
    308,528.73x = 45,410,843,972.97
  5. Step 5: Solve for x
    x = 45,410,843,972.97/308,528.73
  6. Step 6: Final answer
    x = 147,185.14

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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.