Finding the Fourth Proportional to 408,550.49, 612,924.14 and 128,067.74
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Solution
The fourth proportional to 408,550.49, 612,924.14 and 128,067.74 is: 192,132.45
Step by Step Solution
- Step 1: Write the proportion equation
408,550.49 : 612,924.14 = 128,067.74 : x - Step 2: Convert to fraction form
408,550.49/612,924.14 = 128,067.74/x - Step 3: Cross multiply
408,550.49x = 612,924.14 × 128,067.74 - Step 4: Simplify right side
408,550.49x = 78,495,806,336.62 - Step 5: Solve for x
x = 78,495,806,336.62/408,550.49 - Step 6: Final answer
x = 192,132.45
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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.