Finding the Fourth Proportional to 387,994,731.05, 535,352,799.71 and 222,950,414.09
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Solution
The fourth proportional to 387,994,731.05, 535,352,799.71 and 222,950,414.09 is: 307,625,642.38
Step by Step Solution
- Step 1: Write the proportion equation
387,994,731.05 : 535,352,799.71 = 222,950,414.09 : x - Step 2: Convert to fraction form
387,994,731.05/535,352,799.71 = 222,950,414.09/x - Step 3: Cross multiply
387,994,731.05x = 535,352,799.71 × 222,950,414.09 - Step 4: Simplify right side
387,994,731.05x = 119,357,128,377,465,936 - Step 5: Solve for x
x = 119,357,128,377,465,936/387,994,731.05 - Step 6: Final answer
x = 307,625,642.38
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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.