Finding the Fourth Proportional to 393,791.80, 591,125.10 and 216,644.80
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Solution
The fourth proportional to 393,791.80, 591,125.10 and 216,644.80 is: 325,207.84
Step by Step Solution
- Step 1: Write the proportion equation
393,791.80 : 591,125.10 = 216,644.80 : x - Step 2: Convert to fraction form
393,791.80/591,125.10 = 216,644.80/x - Step 3: Cross multiply
393,791.80x = 591,125.10 × 216,644.80 - Step 4: Simplify right side
393,791.80x = 128,064,179,064.48 - Step 5: Solve for x
x = 128,064,179,064.48/393,791.80 - Step 6: Final answer
x = 325,207.84
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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.