Finding the Fourth Proportional to 256,318,105.12, 353,720,683.44 and 138,843,434.08
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Solution
The fourth proportional to 256,318,105.12, 353,720,683.44 and 138,843,434.08 is: 191,604,859.01
Step by Step Solution
- Step 1: Write the proportion equation
256,318,105.12 : 353,720,683.44 = 138,843,434.08 : x - Step 2: Convert to fraction form
256,318,105.12/353,720,683.44 = 138,843,434.08/x - Step 3: Cross multiply
256,318,105.12x = 353,720,683.44 × 138,843,434.08 - Step 4: Simplify right side
256,318,105.12x = 49,111,794,393,934,192 - Step 5: Solve for x
x = 49,111,794,393,934,192/256,318,105.12 - Step 6: Final answer
x = 191,604,859.01
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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.