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Finding the Fourth Proportional to 308,769.60, 463,111.20 and 98,428.80

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Solution

The fourth proportional to 308,769.60, 463,111.20 and 98,428.80 is: 147,629.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,769.60 : 463,111.20 = 98,428.80 : x
  2. Step 2: Convert to fraction form
    308,769.60/463,111.20 = 98,428.80/x
  3. Step 3: Cross multiply
    308,769.60x = 463,111.20 × 98,428.80
  4. Step 4: Simplify right side
    308,769.60x = 45,583,479,682.56
  5. Step 5: Solve for x
    x = 45,583,479,682.56/308,769.60
  6. Step 6: Final answer
    x = 147,629.43

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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.