Finding the Fourth Proportional to 206,487.08, 285,052.46 and 138,479.34
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Solution
The fourth proportional to 206,487.08, 285,052.46 and 138,479.34 is: 191,168.75
Step by Step Solution
- Step 1: Write the proportion equation
206,487.08 : 285,052.46 = 138,479.34 : x - Step 2: Convert to fraction form
206,487.08/285,052.46 = 138,479.34/x - Step 3: Cross multiply
206,487.08x = 285,052.46 × 138,479.34 - Step 4: Simplify right side
206,487.08x = 39,473,875,833.78 - Step 5: Solve for x
x = 39,473,875,833.78/206,487.08 - Step 6: Final answer
x = 191,168.75
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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.