Finding the Fourth Proportional to 390,287.97, 585,472.11 and 147,333.68
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Solution
The fourth proportional to 390,287.97, 585,472.11 and 147,333.68 is: 221,015.68
Step by Step Solution
- Step 1: Write the proportion equation
390,287.97 : 585,472.11 = 147,333.68 : x - Step 2: Convert to fraction form
390,287.97/585,472.11 = 147,333.68/x - Step 3: Cross multiply
390,287.97x = 585,472.11 × 147,333.68 - Step 4: Simplify right side
390,287.97x = 86,259,760,503.66 - Step 5: Solve for x
x = 86,259,760,503.66/390,287.97 - Step 6: Final answer
x = 221,015.68
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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.