Finding the Fourth Proportional to 228,831,569.38, 315,854,771.70 and 149,458,765.05
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Solution
The fourth proportional to 228,831,569.38, 315,854,771.70 and 149,458,765.05 is: 206,296,990.59
Step by Step Solution
- Step 1: Write the proportion equation
228,831,569.38 : 315,854,771.70 = 149,458,765.05 : x - Step 2: Convert to fraction form
228,831,569.38/315,854,771.70 = 149,458,765.05/x - Step 3: Cross multiply
228,831,569.38x = 315,854,771.70 × 149,458,765.05 - Step 4: Simplify right side
228,831,569.38x = 47,207,264,113,431,688 - Step 5: Solve for x
x = 47,207,264,113,431,688/228,831,569.38 - Step 6: Final answer
x = 206,296,990.59
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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.