Finding the Fourth Proportional to 256,590,683.79, 354,102,611.88 and 145,079,129.23
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Solution
The fourth proportional to 256,590,683.79, 354,102,611.88 and 145,079,129.23 is: 200,213,420.97
Step by Step Solution
- Step 1: Write the proportion equation
256,590,683.79 : 354,102,611.88 = 145,079,129.23 : x - Step 2: Convert to fraction form
256,590,683.79/354,102,611.88 = 145,079,129.23/x - Step 3: Cross multiply
256,590,683.79x = 354,102,611.88 × 145,079,129.23 - Step 4: Simplify right side
256,590,683.79x = 51,372,898,589,277,840 - Step 5: Solve for x
x = 51,372,898,589,277,840/256,590,683.79 - Step 6: Final answer
x = 200,213,420.97
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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.