Finding the Fourth Proportional to 287,261.97, 430,939.68 and 84,878.61
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Solution
The fourth proportional to 287,261.97, 430,939.68 and 84,878.61 is: 127,331.72
Step by Step Solution
- Step 1: Write the proportion equation
287,261.97 : 430,939.68 = 84,878.61 : x - Step 2: Convert to fraction form
287,261.97/430,939.68 = 84,878.61/x - Step 3: Cross multiply
287,261.97x = 430,939.68 × 84,878.61 - Step 4: Simplify right side
287,261.97x = 36,577,561,032.24 - Step 5: Solve for x
x = 36,577,561,032.24/287,261.97 - Step 6: Final answer
x = 127,331.72
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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.