Finding the Fourth Proportional to 392,974.62, 542,306.79 and 223,218.06
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Solution
The fourth proportional to 392,974.62, 542,306.79 and 223,218.06 is: 308,041.95
Step by Step Solution
- Step 1: Write the proportion equation
392,974.62 : 542,306.79 = 223,218.06 : x - Step 2: Convert to fraction form
392,974.62/542,306.79 = 223,218.06/x - Step 3: Cross multiply
392,974.62x = 542,306.79 × 223,218.06 - Step 4: Simplify right side
392,974.62x = 121,052,669,588.63 - Step 5: Solve for x
x = 121,052,669,588.63/392,974.62 - Step 6: Final answer
x = 308,041.95
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.