Finding the Fourth Proportional to 318,212,402.58, 439,129,942.83 and 177,081,205.63
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Solution
The fourth proportional to 318,212,402.58, 439,129,942.83 and 177,081,205.63 is: 244,370,298.18
Step by Step Solution
- Step 1: Write the proportion equation
318,212,402.58 : 439,129,942.83 = 177,081,205.63 : x - Step 2: Convert to fraction form
318,212,402.58/439,129,942.83 = 177,081,205.63/x - Step 3: Cross multiply
318,212,402.58x = 439,129,942.83 × 177,081,205.63 - Step 4: Simplify right side
318,212,402.58x = 77,761,659,703,471,552 - Step 5: Solve for x
x = 77,761,659,703,471,552/318,212,402.58 - Step 6: Final answer
x = 244,370,298.18
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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.