Finding the Fourth Proportional to 387,084,920.40, 579,831,118.20 and 195,716,523.60
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Solution
The fourth proportional to 387,084,920.40, 579,831,118.20 and 195,716,523.60 is: 293,172,181.99
Step by Step Solution
- Step 1: Write the proportion equation
387,084,920.40 : 579,831,118.20 = 195,716,523.60 : x - Step 2: Convert to fraction form
387,084,920.40/579,831,118.20 = 195,716,523.60/x - Step 3: Cross multiply
387,084,920.40x = 579,831,118.20 × 195,716,523.60 - Step 4: Simplify right side
387,084,920.40x = 113,482,530,729,204,688 - Step 5: Solve for x
x = 113,482,530,729,204,688/387,084,920.40 - Step 6: Final answer
x = 293,172,181.99
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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.