Finding the Fourth Proportional to 328,436.15, 453,206.21 and 192,443.09
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Solution
The fourth proportional to 328,436.15, 453,206.21 and 192,443.09 is: 265,550.55
Step by Step Solution
- Step 1: Write the proportion equation
328,436.15 : 453,206.21 = 192,443.09 : x - Step 2: Convert to fraction form
328,436.15/453,206.21 = 192,443.09/x - Step 3: Cross multiply
328,436.15x = 453,206.21 × 192,443.09 - Step 4: Simplify right side
328,436.15x = 87,216,400,231.34 - Step 5: Solve for x
x = 87,216,400,231.34/328,436.15 - Step 6: Final answer
x = 265,550.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.