Finding the Fourth Proportional to 310,254.42, 428,190.69 and 189,369.84
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Solution
The fourth proportional to 310,254.42, 428,190.69 and 189,369.84 is: 261,354.54
Step by Step Solution
- Step 1: Write the proportion equation
310,254.42 : 428,190.69 = 189,369.84 : x - Step 2: Convert to fraction form
310,254.42/428,190.69 = 189,369.84/x - Step 3: Cross multiply
310,254.42x = 428,190.69 × 189,369.84 - Step 4: Simplify right side
310,254.42x = 81,086,402,454.79 - Step 5: Solve for x
x = 81,086,402,454.79/310,254.42 - Step 6: Final answer
x = 261,354.54
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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.