Finding the Fourth Proportional to 257,906,560.80, 355,909,537.92 and 140,431,609.75
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Solution
The fourth proportional to 257,906,560.80, 355,909,537.92 and 140,431,609.75 is: 193,794,795.99
Step by Step Solution
- Step 1: Write the proportion equation
257,906,560.80 : 355,909,537.92 = 140,431,609.75 : x - Step 2: Convert to fraction form
257,906,560.80/355,909,537.92 = 140,431,609.75/x - Step 3: Cross multiply
257,906,560.80x = 355,909,537.92 × 140,431,609.75 - Step 4: Simplify right side
257,906,560.80x = 49,980,949,335,484,272 - Step 5: Solve for x
x = 49,980,949,335,484,272/257,906,560.80 - Step 6: Final answer
x = 193,794,795.99
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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.