Finding the Fourth Proportional to 217,646.87, 300,352.68 and 122,153.57
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Solution
The fourth proportional to 217,646.87, 300,352.68 and 122,153.57 is: 168,571.92
Step by Step Solution
- Step 1: Write the proportion equation
217,646.87 : 300,352.68 = 122,153.57 : x - Step 2: Convert to fraction form
217,646.87/300,352.68 = 122,153.57/x - Step 3: Cross multiply
217,646.87x = 300,352.68 × 122,153.57 - Step 4: Simplify right side
217,646.87x = 36,689,151,543.54 - Step 5: Solve for x
x = 36,689,151,543.54/217,646.87 - Step 6: Final answer
x = 168,571.92
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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.