Finding the Fourth Proportional to 408,548.82, 612,921.71 and 128,066.07
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Solution
The fourth proportional to 408,548.82, 612,921.71 and 128,066.07 is: 192,129.98
Step by Step Solution
- Step 1: Write the proportion equation
408,548.82 : 612,921.71 = 128,066.07 : x - Step 2: Convert to fraction form
408,548.82/612,921.71 = 128,066.07/x - Step 3: Cross multiply
408,548.82x = 612,921.71 × 128,066.07 - Step 4: Simplify right side
408,548.82x = 78,494,474,937.54 - Step 5: Solve for x
x = 78,494,474,937.54/408,548.82 - Step 6: Final answer
x = 192,129.98
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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.