Finding the Fourth Proportional to 393,041.40, 542,367.29 and 220,931.99
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Solution
The fourth proportional to 393,041.40, 542,367.29 and 220,931.99 is: 304,869.37
Step by Step Solution
- Step 1: Write the proportion equation
393,041.40 : 542,367.29 = 220,931.99 : x - Step 2: Convert to fraction form
393,041.40/542,367.29 = 220,931.99/x - Step 3: Cross multiply
393,041.40x = 542,367.29 × 220,931.99 - Step 4: Simplify right side
393,041.40x = 119,826,284,564.98 - Step 5: Solve for x
x = 119,826,284,564.98/393,041.40 - Step 6: Final answer
x = 304,869.37
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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.