Finding the Fourth Proportional to 393,671,530.29, 543,283,205.84 and 226,407,904.95
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Solution
The fourth proportional to 393,671,530.29, 543,283,205.84 and 226,407,904.95 is: 312,452,394.86
Step by Step Solution
- Step 1: Write the proportion equation
393,671,530.29 : 543,283,205.84 = 226,407,904.95 : x - Step 2: Convert to fraction form
393,671,530.29/543,283,205.84 = 226,407,904.95/x - Step 3: Cross multiply
393,671,530.29x = 543,283,205.84 × 226,407,904.95 - Step 4: Simplify right side
393,671,530.29x = 123,003,612,428,754,000 - Step 5: Solve for x
x = 123,003,612,428,754,000/393,671,530.29 - Step 6: Final answer
x = 312,452,394.86
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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.