Finding the Fourth Proportional to 285,955.80, 428,936.80 and 86,277.96
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Solution
The fourth proportional to 285,955.80, 428,936.80 and 86,277.96 is: 129,417.88
Step by Step Solution
- Step 1: Write the proportion equation
285,955.80 : 428,936.80 = 86,277.96 : x - Step 2: Convert to fraction form
285,955.80/428,936.80 = 86,277.96/x - Step 3: Cross multiply
285,955.80x = 428,936.80 × 86,277.96 - Step 4: Simplify right side
285,955.80x = 37,007,792,072.93 - Step 5: Solve for x
x = 37,007,792,072.93/285,955.80 - Step 6: Final answer
x = 129,417.88
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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.