Finding the Fourth Proportional to 212,476,992.40, 293,214,267.72 and 129,964,715.92
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Solution
The fourth proportional to 212,476,992.40, 293,214,267.72 and 129,964,715.92 is: 179,348,872.45
Step by Step Solution
- Step 1: Write the proportion equation
212,476,992.40 : 293,214,267.72 = 129,964,715.92 : x - Step 2: Convert to fraction form
212,476,992.40/293,214,267.72 = 129,964,715.92/x - Step 3: Cross multiply
212,476,992.40x = 293,214,267.72 × 129,964,715.92 - Step 4: Simplify right side
212,476,992.40x = 38,107,509,007,920,632 - Step 5: Solve for x
x = 38,107,509,007,920,632/212,476,992.40 - Step 6: Final answer
x = 179,348,872.45
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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.