Finding the Fourth Proportional to 312,952.80, 431,871.09 and 169,711.19
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Solution
The fourth proportional to 312,952.80, 431,871.09 and 169,711.19 is: 234,199.39
Step by Step Solution
- Step 1: Write the proportion equation
312,952.80 : 431,871.09 = 169,711.19 : x - Step 2: Convert to fraction form
312,952.80/431,871.09 = 169,711.19/x - Step 3: Cross multiply
312,952.80x = 431,871.09 × 169,711.19 - Step 4: Simplify right side
312,952.80x = 73,293,354,451.14 - Step 5: Solve for x
x = 73,293,354,451.14/312,952.80 - Step 6: Final answer
x = 234,199.39
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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.