Finding the Fourth Proportional to 390,159.23, 585,249.22 and 137,382.23
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Solution
The fourth proportional to 390,159.23, 585,249.22 and 137,382.23 is: 206,076.99
Step by Step Solution
- Step 1: Write the proportion equation
390,159.23 : 585,249.22 = 137,382.23 : x - Step 2: Convert to fraction form
390,159.23/585,249.22 = 137,382.23/x - Step 3: Cross multiply
390,159.23x = 585,249.22 × 137,382.23 - Step 4: Simplify right side
390,159.23x = 80,402,841,678.57 - Step 5: Solve for x
x = 80,402,841,678.57/390,159.23 - Step 6: Final answer
x = 206,076.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.