Finding the Fourth Proportional to 399,038.35, 550,684.61 and 217,761.96
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Solution
The fourth proportional to 399,038.35, 550,684.61 and 217,761.96 is: 300,517.88
Step by Step Solution
- Step 1: Write the proportion equation
399,038.35 : 550,684.61 = 217,761.96 : x - Step 2: Convert to fraction form
399,038.35/550,684.61 = 217,761.96/x - Step 3: Cross multiply
399,038.35x = 550,684.61 × 217,761.96 - Step 4: Simplify right side
399,038.35x = 119,918,159,471.03 - Step 5: Solve for x
x = 119,918,159,471.03/399,038.35 - Step 6: Final answer
x = 300,517.88
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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.