Finding the Fourth Proportional to 305,689.98, 421,865.36 and 169,723.96
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Solution
The fourth proportional to 305,689.98, 421,865.36 and 169,723.96 is: 234,226.38
Step by Step Solution
- Step 1: Write the proportion equation
305,689.98 : 421,865.36 = 169,723.96 : x - Step 2: Convert to fraction form
305,689.98/421,865.36 = 169,723.96/x - Step 3: Cross multiply
305,689.98x = 421,865.36 × 169,723.96 - Step 4: Simplify right side
305,689.98x = 71,600,659,173.90 - Step 5: Solve for x
x = 71,600,659,173.90/305,689.98 - Step 6: Final answer
x = 234,226.38
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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.