Finding the Fourth Proportional to 312,788.12, 431,636.04 and 169,545.09
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Solution
The fourth proportional to 312,788.12, 431,636.04 and 169,545.09 is: 233,965.96
Step by Step Solution
- Step 1: Write the proportion equation
312,788.12 : 431,636.04 = 169,545.09 : x - Step 2: Convert to fraction form
312,788.12/431,636.04 = 169,545.09/x - Step 3: Cross multiply
312,788.12x = 431,636.04 × 169,545.09 - Step 4: Simplify right side
312,788.12x = 73,181,771,249.04 - Step 5: Solve for x
x = 73,181,771,249.04/312,788.12 - Step 6: Final answer
x = 233,965.96
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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.