Finding the Fourth Proportional to 381,674.80, 572,512.20 and 361,991.80
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Solution
The fourth proportional to 381,674.80, 572,512.20 and 361,991.80 is: 542,987.70
Step by Step Solution
- Step 1: Write the proportion equation
381,674.80 : 572,512.20 = 361,991.80 : x - Step 2: Convert to fraction form
381,674.80/572,512.20 = 361,991.80/x - Step 3: Cross multiply
381,674.80x = 572,512.20 × 361,991.80 - Step 4: Simplify right side
381,674.80x = 207,244,721,799.96 - Step 5: Solve for x
x = 207,244,721,799.96/381,674.80 - Step 6: Final answer
x = 542,987.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.