Finding the Fourth Proportional to 220,186.36, 303,857.76 and 129,545.74
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Solution
The fourth proportional to 220,186.36, 303,857.76 and 129,545.74 is: 178,773.46
Step by Step Solution
- Step 1: Write the proportion equation
220,186.36 : 303,857.76 = 129,545.74 : x - Step 2: Convert to fraction form
220,186.36/303,857.76 = 129,545.74/x - Step 3: Cross multiply
220,186.36x = 303,857.76 × 129,545.74 - Step 4: Simplify right side
220,186.36x = 39,363,478,373.94 - Step 5: Solve for x
x = 39,363,478,373.94/220,186.36 - Step 6: Final answer
x = 178,773.46
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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.