Finding the Fourth Proportional to 542,902.70, 749,121.31 and 310,326.19
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Solution
The fourth proportional to 542,902.70, 749,121.31 and 310,326.19 is: 428,201.88
Step by Step Solution
- Step 1: Write the proportion equation
542,902.70 : 749,121.31 = 310,326.19 : x - Step 2: Convert to fraction form
542,902.70/749,121.31 = 310,326.19/x - Step 3: Cross multiply
542,902.70x = 749,121.31 × 310,326.19 - Step 4: Simplify right side
542,902.70x = 232,471,960,495.21 - Step 5: Solve for x
x = 232,471,960,495.21/542,902.70 - Step 6: Final answer
x = 428,201.88
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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.