Finding the Fourth Proportional to 390,674.26, 585,623.42 and 221,845.14
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Solution
The fourth proportional to 390,674.26, 585,623.42 and 221,845.14 is: 332,547.40
Step by Step Solution
- Step 1: Write the proportion equation
390,674.26 : 585,623.42 = 221,845.14 : x - Step 2: Convert to fraction form
390,674.26/585,623.42 = 221,845.14/x - Step 3: Cross multiply
390,674.26x = 585,623.42 × 221,845.14 - Step 4: Simplify right side
390,674.26x = 129,917,709,597.18 - Step 5: Solve for x
x = 129,917,709,597.18/390,674.26 - Step 6: Final answer
x = 332,547.40
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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.