Finding the Fourth Proportional to 392,476,636.09, 541,629,311.04 and 216,275,981.68
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Solution
The fourth proportional to 392,476,636.09, 541,629,311.04 and 216,275,981.68 is: 298,467,221.17
Step by Step Solution
- Step 1: Write the proportion equation
392,476,636.09 : 541,629,311.04 = 216,275,981.68 : x - Step 2: Convert to fraction form
392,476,636.09/541,629,311.04 = 216,275,981.68/x - Step 3: Cross multiply
392,476,636.09x = 541,629,311.04 × 216,275,981.68 - Step 4: Simplify right side
392,476,636.09x = 117,141,410,948,048,528 - Step 5: Solve for x
x = 117,141,410,948,048,528/392,476,636.09 - Step 6: Final answer
x = 298,467,221.17
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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.