Finding the Fourth Proportional to 212,965.15, 319,809.28 and 142,341.62
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Solution
The fourth proportional to 212,965.15, 319,809.28 and 142,341.62 is: 213,754.09
Step by Step Solution
- Step 1: Write the proportion equation
212,965.15 : 319,809.28 = 142,341.62 : x - Step 2: Convert to fraction form
212,965.15/319,809.28 = 142,341.62/x - Step 3: Cross multiply
212,965.15x = 319,809.28 × 142,341.62 - Step 4: Simplify right side
212,965.15x = 45,522,171,006.23 - Step 5: Solve for x
x = 45,522,171,006.23/212,965.15 - Step 6: Final answer
x = 213,754.09
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1.5x scale
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.