Finding the Fourth Proportional to 387,495,236.70, 534,752,248.56 and 220,205,138.64
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Solution
The fourth proportional to 387,495,236.70, 534,752,248.56 and 220,205,138.64 is: 303,888,104.63
Step by Step Solution
- Step 1: Write the proportion equation
387,495,236.70 : 534,752,248.56 = 220,205,138.64 : x - Step 2: Convert to fraction form
387,495,236.70/534,752,248.56 = 220,205,138.64/x - Step 3: Cross multiply
387,495,236.70x = 534,752,248.56 × 220,205,138.64 - Step 4: Simplify right side
387,495,236.70x = 117,755,193,032,206,528 - Step 5: Solve for x
x = 117,755,193,032,206,528/387,495,236.70 - Step 6: Final answer
x = 303,888,104.63
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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.