Finding the Fourth Proportional to 257,644.68, 386,475.66 and 77,738.28
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Solution
The fourth proportional to 257,644.68, 386,475.66 and 77,738.28 is: 116,610.03
Step by Step Solution
- Step 1: Write the proportion equation
257,644.68 : 386,475.66 = 77,738.28 : x - Step 2: Convert to fraction form
257,644.68/386,475.66 = 77,738.28/x - Step 3: Cross multiply
257,644.68x = 386,475.66 × 77,738.28 - Step 4: Simplify right side
257,644.68x = 30,043,953,070.26 - Step 5: Solve for x
x = 30,043,953,070.26/257,644.68 - Step 6: Final answer
x = 116,610.03
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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.