Finding the Fourth Proportional to 219,874.32, 303,434.01 and 129,228.99
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Solution
The fourth proportional to 219,874.32, 303,434.01 and 129,228.99 is: 178,340.38
Step by Step Solution
- Step 1: Write the proportion equation
219,874.32 : 303,434.01 = 129,228.99 : x - Step 2: Convert to fraction form
219,874.32/303,434.01 = 129,228.99/x - Step 3: Cross multiply
219,874.32x = 303,434.01 × 129,228.99 - Step 4: Simplify right side
219,874.32x = 39,212,470,643.95 - Step 5: Solve for x
x = 39,212,470,643.95/219,874.32 - Step 6: Final answer
x = 178,340.38
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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.