Finding the Fourth Proportional to 371,640,534.09, 512,877,421.58 and 212,901,336.44
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Solution
The fourth proportional to 371,640,534.09, 512,877,421.58 and 212,901,336.44 is: 293,811,569.16
Step by Step Solution
- Step 1: Write the proportion equation
371,640,534.09 : 512,877,421.58 = 212,901,336.44 : x - Step 2: Convert to fraction form
371,640,534.09/512,877,421.58 = 212,901,336.44/x - Step 3: Cross multiply
371,640,534.09x = 512,877,421.58 × 212,901,336.44 - Step 4: Simplify right side
371,640,534.09x = 109,192,288,484,283,296 - Step 5: Solve for x
x = 109,192,288,484,283,296/371,640,534.09 - Step 6: Final answer
x = 293,811,569.16
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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.