Finding the Fourth Proportional to 310,674.69, 430,354.42 and 304,376.13
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Solution
The fourth proportional to 310,674.69, 430,354.42 and 304,376.13 is: 421,629.49
Step by Step Solution
- Step 1: Write the proportion equation
310,674.69 : 430,354.42 = 304,376.13 : x - Step 2: Convert to fraction form
310,674.69/430,354.42 = 304,376.13/x - Step 3: Cross multiply
310,674.69x = 430,354.42 × 304,376.13 - Step 4: Simplify right side
310,674.69x = 130,989,612,127.05 - Step 5: Solve for x
x = 130,989,612,127.05/310,674.69 - Step 6: Final answer
x = 421,629.49
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.