Finding the Fourth Proportional to 203,781.60, 305,902.80 and 157,240.80
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Solution
The fourth proportional to 203,781.60, 305,902.80 and 157,240.80 is: 236,038.98
Step by Step Solution
- Step 1: Write the proportion equation
203,781.60 : 305,902.80 = 157,240.80 : x - Step 2: Convert to fraction form
203,781.60/305,902.80 = 157,240.80/x - Step 3: Cross multiply
203,781.60x = 305,902.80 × 157,240.80 - Step 4: Simplify right side
203,781.60x = 48,100,400,994.24 - Step 5: Solve for x
x = 48,100,400,994.24/203,781.60 - Step 6: Final answer
x = 236,038.98
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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.