Finding the Fourth Proportional to 408,549.98, 612,923.39 and 128,067.23
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Solution
The fourth proportional to 408,549.98, 612,923.39 and 128,067.23 is: 192,131.70
Step by Step Solution
- Step 1: Write the proportion equation
408,549.98 : 612,923.39 = 128,067.23 : x - Step 2: Convert to fraction form
408,549.98/612,923.39 = 128,067.23/x - Step 3: Cross multiply
408,549.98x = 612,923.39 × 128,067.23 - Step 4: Simplify right side
408,549.98x = 78,495,402,131.73 - Step 5: Solve for x
x = 78,495,402,131.73/408,549.98 - Step 6: Final answer
x = 192,131.70
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1.5x scale
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.