Finding the Fourth Proportional to 428,778.92, 643,553.87 and 229,269.84
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Solution
The fourth proportional to 428,778.92, 643,553.87 and 229,269.84 is: 344,110.88
Step by Step Solution
- Step 1: Write the proportion equation
428,778.92 : 643,553.87 = 229,269.84 : x - Step 2: Convert to fraction form
428,778.92/643,553.87 = 229,269.84/x - Step 3: Cross multiply
428,778.92x = 643,553.87 × 229,269.84 - Step 4: Simplify right side
428,778.92x = 147,547,492,806.28 - Step 5: Solve for x
x = 147,547,492,806.28/428,778.92 - Step 6: Final answer
x = 344,110.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.