Finding the Fourth Proportional to 235,545.80, 325,043.84 and 128,115.68
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Solution
The fourth proportional to 235,545.80, 325,043.84 and 128,115.68 is: 176,794.55
Step by Step Solution
- Step 1: Write the proportion equation
235,545.80 : 325,043.84 = 128,115.68 : x - Step 2: Convert to fraction form
235,545.80/325,043.84 = 128,115.68/x - Step 3: Cross multiply
235,545.80x = 325,043.84 × 128,115.68 - Step 4: Simplify right side
235,545.80x = 41,643,212,591.41 - Step 5: Solve for x
x = 41,643,212,591.41/235,545.80 - Step 6: Final answer
x = 176,794.55
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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.