Finding the Fourth Proportional to 279,864.13, 386,185.81 and 163,604.78
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Solution
The fourth proportional to 279,864.13, 386,185.81 and 163,604.78 is: 225,758.99
Step by Step Solution
- Step 1: Write the proportion equation
279,864.13 : 386,185.81 = 163,604.78 : x - Step 2: Convert to fraction form
279,864.13/386,185.81 = 163,604.78/x - Step 3: Cross multiply
279,864.13x = 386,185.81 × 163,604.78 - Step 4: Simplify right side
279,864.13x = 63,181,842,144.23 - Step 5: Solve for x
x = 63,181,842,144.23/279,864.13 - Step 6: Final answer
x = 225,758.99
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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.