Finding the Fourth Proportional to 221,287.76, 331,964.28 and 71,478.08
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Solution
The fourth proportional to 221,287.76, 331,964.28 and 71,478.08 is: 107,227.66
Step by Step Solution
- Step 1: Write the proportion equation
221,287.76 : 331,964.28 = 71,478.08 : x - Step 2: Convert to fraction form
221,287.76/331,964.28 = 71,478.08/x - Step 3: Cross multiply
221,287.76x = 331,964.28 × 71,478.08 - Step 4: Simplify right side
221,287.76x = 23,728,169,362.98 - Step 5: Solve for x
x = 23,728,169,362.98/221,287.76 - Step 6: Final answer
x = 107,227.66
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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.