Finding the Fourth Proportional to 257,906,559.12, 355,909,535.58 and 140,431,608.06
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Solution
The fourth proportional to 257,906,559.12, 355,909,535.58 and 140,431,608.06 is: 193,794,793.65
Step by Step Solution
- Step 1: Write the proportion equation
257,906,559.12 : 355,909,535.58 = 140,431,608.06 : x - Step 2: Convert to fraction form
257,906,559.12/355,909,535.58 = 140,431,608.06/x - Step 3: Cross multiply
257,906,559.12x = 355,909,535.58 × 140,431,608.06 - Step 4: Simplify right side
257,906,559.12x = 49,980,948,405,387,184 - Step 5: Solve for x
x = 49,980,948,405,387,184/257,906,559.12 - Step 6: Final answer
x = 193,794,793.65
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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.