Finding the Fourth Proportional to 381,972.92, 527,122.49 and 209,901.98
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Solution
The fourth proportional to 381,972.92, 527,122.49 and 209,901.98 is: 289,664.65
Step by Step Solution
- Step 1: Write the proportion equation
381,972.92 : 527,122.49 = 209,901.98 : x - Step 2: Convert to fraction form
381,972.92/527,122.49 = 209,901.98/x - Step 3: Cross multiply
381,972.92x = 527,122.49 × 209,901.98 - Step 4: Simplify right side
381,972.92x = 110,644,051,455.54 - Step 5: Solve for x
x = 110,644,051,455.54/381,972.92 - Step 6: Final answer
x = 289,664.65
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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.