Finding the Fourth Proportional to 304,359.68, 420,028.64 and 168,391.20
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Solution
The fourth proportional to 304,359.68, 420,028.64 and 168,391.20 is: 232,386.65
Step by Step Solution
- Step 1: Write the proportion equation
304,359.68 : 420,028.64 = 168,391.20 : x - Step 2: Convert to fraction form
304,359.68/420,028.64 = 168,391.20/x - Step 3: Cross multiply
304,359.68x = 420,028.64 × 168,391.20 - Step 4: Simplify right side
304,359.68x = 70,729,126,723.97 - Step 5: Solve for x
x = 70,729,126,723.97/304,359.68 - Step 6: Final answer
x = 232,386.65
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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.