Finding the Fourth Proportional to 428,572.34, 642,948.42 and 162,326.96
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Solution
The fourth proportional to 428,572.34, 642,948.42 and 162,326.96 is: 243,524.49
Step by Step Solution
- Step 1: Write the proportion equation
428,572.34 : 642,948.42 = 162,326.96 : x - Step 2: Convert to fraction form
428,572.34/642,948.42 = 162,326.96/x - Step 3: Cross multiply
428,572.34x = 642,948.42 × 162,326.96 - Step 4: Simplify right side
428,572.34x = 104,367,862,455.40 - Step 5: Solve for x
x = 104,367,862,455.40/428,572.34 - Step 6: Final answer
x = 243,524.49
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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.