Finding the Fourth Proportional to 386,160.68, 532,894.20 and 211,728.80
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Solution
The fourth proportional to 386,160.68, 532,894.20 and 211,728.80 is: 292,181.61
Step by Step Solution
- Step 1: Write the proportion equation
386,160.68 : 532,894.20 = 211,728.80 : x - Step 2: Convert to fraction form
386,160.68/532,894.20 = 211,728.80/x - Step 3: Cross multiply
386,160.68x = 532,894.20 × 211,728.80 - Step 4: Simplify right side
386,160.68x = 112,829,049,492.96 - Step 5: Solve for x
x = 112,829,049,492.96/386,160.68 - Step 6: Final answer
x = 292,181.61
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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.