Finding the Fourth Proportional to 431,933.91, 647,955.54 and 147,678.99
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Solution
The fourth proportional to 431,933.91, 647,955.54 and 147,678.99 is: 221,537.18
Step by Step Solution
- Step 1: Write the proportion equation
431,933.91 : 647,955.54 = 147,678.99 : x - Step 2: Convert to fraction form
431,933.91/647,955.54 = 147,678.99/x - Step 3: Cross multiply
431,933.91x = 647,955.54 × 147,678.99 - Step 4: Simplify right side
431,933.91x = 95,689,419,712.10 - Step 5: Solve for x
x = 95,689,419,712.10/431,933.91 - Step 6: Final answer
x = 221,537.18
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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.