Finding the Fourth Proportional to 382,870.71, 528,392.09 and 221,728.63
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Solution
The fourth proportional to 382,870.71, 528,392.09 and 221,728.63 is: 306,003.18
Step by Step Solution
- Step 1: Write the proportion equation
382,870.71 : 528,392.09 = 221,728.63 : x - Step 2: Convert to fraction form
382,870.71/528,392.09 = 221,728.63/x - Step 3: Cross multiply
382,870.71x = 528,392.09 × 221,728.63 - Step 4: Simplify right side
382,870.71x = 117,159,654,218.54 - Step 5: Solve for x
x = 117,159,654,218.54/382,870.71 - Step 6: Final answer
x = 306,003.18
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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.