Finding the Fourth Proportional to 395,679.72, 545,966.12 and 221,253.09
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Solution
The fourth proportional to 395,679.72, 545,966.12 and 221,253.09 is: 305,289.06
Step by Step Solution
- Step 1: Write the proportion equation
395,679.72 : 545,966.12 = 221,253.09 : x - Step 2: Convert to fraction form
395,679.72/545,966.12 = 221,253.09/x - Step 3: Cross multiply
395,679.72x = 545,966.12 × 221,253.09 - Step 4: Simplify right side
395,679.72x = 120,796,689,591.07 - Step 5: Solve for x
x = 120,796,689,591.07/395,679.72 - Step 6: Final answer
x = 305,289.06
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.