Finding the Fourth Proportional to 257,561.20, 386,422.80 and 124,445.80
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Solution
The fourth proportional to 257,561.20, 386,422.80 and 124,445.80 is: 186,707.84
Step by Step Solution
- Step 1: Write the proportion equation
257,561.20 : 386,422.80 = 124,445.80 : x - Step 2: Convert to fraction form
257,561.20/386,422.80 = 124,445.80/x - Step 3: Cross multiply
257,561.20x = 386,422.80 × 124,445.80 - Step 4: Simplify right side
257,561.20x = 48,088,694,484.24 - Step 5: Solve for x
x = 48,088,694,484.24/257,561.20 - Step 6: Final answer
x = 186,707.84
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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.