Finding the Fourth Proportional to 395,135,120.16, 545,290,852.47 and 218,925,891.18
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Solution
The fourth proportional to 395,135,120.16, 545,290,852.47 and 218,925,891.18 is: 302,120,160.27
Step by Step Solution
- Step 1: Write the proportion equation
395,135,120.16 : 545,290,852.47 = 218,925,891.18 : x - Step 2: Convert to fraction form
395,135,120.16/545,290,852.47 = 218,925,891.18/x - Step 3: Cross multiply
395,135,120.16x = 545,290,852.47 × 218,925,891.18 - Step 4: Simplify right side
395,135,120.16x = 119,378,285,829,296,672 - Step 5: Solve for x
x = 119,378,285,829,296,672/395,135,120.16 - Step 6: Final answer
x = 302,120,160.27
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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.