Finding the Fourth Proportional to 386,886.06, 533,902.77 and 217,120.14
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Solution
The fourth proportional to 386,886.06, 533,902.77 and 217,120.14 is: 299,625.80
Step by Step Solution
- Step 1: Write the proportion equation
386,886.06 : 533,902.77 = 217,120.14 : x - Step 2: Convert to fraction form
386,886.06/533,902.77 = 217,120.14/x - Step 3: Cross multiply
386,886.06x = 533,902.77 × 217,120.14 - Step 4: Simplify right side
386,886.06x = 115,921,044,168.79 - Step 5: Solve for x
x = 115,921,044,168.79/386,886.06 - Step 6: Final answer
x = 299,625.80
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1.5x scale
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.