Finding the Fourth Proportional to 257,438,125.10, 386,157,187.65 and 257,438,125.10
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Solution
The fourth proportional to 257,438,125.10, 386,157,187.65 and 257,438,125.10 is: 386,157,187.65
Step by Step Solution
- Step 1: Write the proportion equation
257,438,125.10 : 386,157,187.65 = 257,438,125.10 : x - Step 2: Convert to fraction form
257,438,125.10/386,157,187.65 = 257,438,125.10/x - Step 3: Cross multiply
257,438,125.10x = 386,157,187.65 × 257,438,125.10 - Step 4: Simplify right side
257,438,125.10x = 99,411,582,382,504,864 - Step 5: Solve for x
x = 99,411,582,382,504,864/257,438,125.10 - Step 6: Final answer
x = 386,157,187.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.