Finding the Fourth Proportional to 221,253.93, 331,848.09 and 80,979.75
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Solution
The fourth proportional to 221,253.93, 331,848.09 and 80,979.75 is: 121,457.62
Step by Step Solution
- Step 1: Write the proportion equation
221,253.93 : 331,848.09 = 80,979.75 : x - Step 2: Convert to fraction form
221,253.93/331,848.09 = 80,979.75/x - Step 3: Cross multiply
221,253.93x = 331,848.09 × 80,979.75 - Step 4: Simplify right side
221,253.93x = 26,872,975,366.18 - Step 5: Solve for x
x = 26,872,975,366.18/221,253.93 - Step 6: Final answer
x = 121,457.62
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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.