Finding the Fourth Proportional to 399,117.44, 550,793.40 and 217,840.88
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Solution
The fourth proportional to 399,117.44, 550,793.40 and 217,840.88 is: 300,626.60
Step by Step Solution
- Step 1: Write the proportion equation
399,117.44 : 550,793.40 = 217,840.88 : x - Step 2: Convert to fraction form
399,117.44/550,793.40 = 217,840.88/x - Step 3: Cross multiply
399,117.44x = 550,793.40 × 217,840.88 - Step 4: Simplify right side
399,117.44x = 119,985,318,954.19 - Step 5: Solve for x
x = 119,985,318,954.19/399,117.44 - Step 6: Final answer
x = 300,626.60
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1.5x scale
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.