Finding the Fourth Proportional to 394,964,409.16, 545,044,204.85 and 218,748,621.11
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Solution
The fourth proportional to 394,964,409.16, 545,044,204.85 and 218,748,621.11 is: 301,869,397.56
Step by Step Solution
- Step 1: Write the proportion equation
394,964,409.16 : 545,044,204.85 = 218,748,621.11 : x - Step 2: Convert to fraction form
394,964,409.16/545,044,204.85 = 218,748,621.11/x - Step 3: Cross multiply
394,964,409.16x = 545,044,204.85 × 218,748,621.11 - Step 4: Simplify right side
394,964,409.16x = 119,227,668,252,350,816 - Step 5: Solve for x
x = 119,227,668,252,350,816/394,964,409.16 - Step 6: Final answer
x = 301,869,397.56
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1.5x scale
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.