Finding the Fourth Proportional to 310,626.42, 428,699.75 and 172,818.99
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Solution
The fourth proportional to 310,626.42, 428,699.75 and 172,818.99 is: 238,509.83
Step by Step Solution
- Step 1: Write the proportion equation
310,626.42 : 428,699.75 = 172,818.99 : x - Step 2: Convert to fraction form
310,626.42/428,699.75 = 172,818.99/x - Step 3: Cross multiply
310,626.42x = 428,699.75 × 172,818.99 - Step 4: Simplify right side
310,626.42x = 74,087,456,096.80 - Step 5: Solve for x
x = 74,087,456,096.80/310,626.42 - Step 6: Final answer
x = 238,509.83
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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.