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Finding the Fourth Proportional to 308,242.94, 462,364.41 and 86,626.94

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Solution

The fourth proportional to 308,242.94, 462,364.41 and 86,626.94 is: 129,940.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,242.94 : 462,364.41 = 86,626.94 : x
  2. Step 2: Convert to fraction form
    308,242.94/462,364.41 = 86,626.94/x
  3. Step 3: Cross multiply
    308,242.94x = 462,364.41 × 86,626.94
  4. Step 4: Simplify right side
    308,242.94x = 40,053,213,570.07
  5. Step 5: Solve for x
    x = 40,053,213,570.07/308,242.94
  6. Step 6: Final answer
    x = 129,940.41

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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.