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Finding the Fourth Proportional to 308,872.80, 463,608.79 and 149,061.20

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Solution

The fourth proportional to 308,872.80, 463,608.79 and 149,061.20 is: 223,736.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,872.80 : 463,608.79 = 149,061.20 : x
  2. Step 2: Convert to fraction form
    308,872.80/463,608.79 = 149,061.20/x
  3. Step 3: Cross multiply
    308,872.80x = 463,608.79 × 149,061.20
  4. Step 4: Simplify right side
    308,872.80x = 69,106,081,584.99
  5. Step 5: Solve for x
    x = 69,106,081,584.99/308,872.80
  6. Step 6: Final answer
    x = 223,736.38

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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.