Finding the Fourth Proportional to 242,643,408, 363,965,112 and 81,085,344
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Solution
The fourth proportional to 242,643,408, 363,965,112 and 81,085,344 is: 121,628,016
Step by Step Solution
- Step 1: Write the proportion equation
242,643,408 : 363,965,112 = 81,085,344 : x - Step 2: Convert to fraction form
242,643,408/363,965,112 = 81,085,344/x - Step 3: Cross multiply
242,643,408x = 363,965,112 × 81,085,344 - Step 4: Simplify right side
242,643,408x = 29,512,236,310,518,528 - Step 5: Solve for x
x = 29,512,236,310,518,528/242,643,408 - Step 6: Final answer
x = 121,628,016
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.