Finding the Fourth Proportional to 310,718.19, 428,849.99 and 194,485.56
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Solution
The fourth proportional to 310,718.19, 428,849.99 and 194,485.56 is: 268,426.94
Step by Step Solution
- Step 1: Write the proportion equation
310,718.19 : 428,849.99 = 194,485.56 : x - Step 2: Convert to fraction form
310,718.19/428,849.99 = 194,485.56/x - Step 3: Cross multiply
310,718.19x = 428,849.99 × 194,485.56 - Step 4: Simplify right side
310,718.19x = 83,405,131,681.28 - Step 5: Solve for x
x = 83,405,131,681.28/310,718.19 - Step 6: Final answer
x = 268,426.94
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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.