Finding the Fourth Proportional to 257,707.12, 355,635.48 and 144,528.88
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Solution
The fourth proportional to 257,707.12, 355,635.48 and 144,528.88 is: 199,449.66
Step by Step Solution
- Step 1: Write the proportion equation
257,707.12 : 355,635.48 = 144,528.88 : x - Step 2: Convert to fraction form
257,707.12/355,635.48 = 144,528.88/x - Step 3: Cross multiply
257,707.12x = 355,635.48 × 144,528.88 - Step 4: Simplify right side
257,707.12x = 51,399,597,612.66 - Step 5: Solve for x
x = 51,399,597,612.66/257,707.12 - Step 6: Final answer
x = 199,449.66
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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.