Finding the Fourth Proportional to 256,025,912.96, 353,316,639.28 and 138,551,212
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Solution
The fourth proportional to 256,025,912.96, 353,316,639.28 and 138,551,212 is: 191,201,148.45
Step by Step Solution
- Step 1: Write the proportion equation
256,025,912.96 : 353,316,639.28 = 138,551,212 : x - Step 2: Convert to fraction form
256,025,912.96/353,316,639.28 = 138,551,212/x - Step 3: Cross multiply
256,025,912.96x = 353,316,639.28 × 138,551,212 - Step 4: Simplify right side
256,025,912.96x = 48,952,448,592,010,800 - Step 5: Solve for x
x = 48,952,448,592,010,800/256,025,912.96 - Step 6: Final answer
x = 191,201,148.45
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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.