Finding the Fourth Proportional to 421,418.40, 632,032.68 and 121,832.28
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Solution
The fourth proportional to 421,418.40, 632,032.68 and 121,832.28 is: 182,720.98
Step by Step Solution
- Step 1: Write the proportion equation
421,418.40 : 632,032.68 = 121,832.28 : x - Step 2: Convert to fraction form
421,418.40/632,032.68 = 121,832.28/x - Step 3: Cross multiply
421,418.40x = 632,032.68 × 121,832.28 - Step 4: Simplify right side
421,418.40x = 77,001,982,438.91 - Step 5: Solve for x
x = 77,001,982,438.91/421,418.40 - Step 6: Final answer
x = 182,720.98
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.