Finding the Fourth Proportional to 287,726.13, 397,052.96 and 158,670.05
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Solution
The fourth proportional to 287,726.13, 397,052.96 and 158,670.05 is: 218,959.65
Step by Step Solution
- Step 1: Write the proportion equation
287,726.13 : 397,052.96 = 158,670.05 : x - Step 2: Convert to fraction form
287,726.13/397,052.96 = 158,670.05/x - Step 3: Cross multiply
287,726.13x = 397,052.96 × 158,670.05 - Step 4: Simplify right side
287,726.13x = 63,000,413,015.85 - Step 5: Solve for x
x = 63,000,413,015.85/287,726.13 - Step 6: Final answer
x = 218,959.65
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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.