Finding the Fourth Proportional to 399,047.99, 550,697.96 and 217,771.65
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Solution
The fourth proportional to 399,047.99, 550,697.96 and 217,771.65 is: 300,531.28
Step by Step Solution
- Step 1: Write the proportion equation
399,047.99 : 550,697.96 = 217,771.65 : x - Step 2: Convert to fraction form
399,047.99/550,697.96 = 217,771.65/x - Step 3: Cross multiply
399,047.99x = 550,697.96 × 217,771.65 - Step 4: Simplify right side
399,047.99x = 119,926,402,311.98 - Step 5: Solve for x
x = 119,926,402,311.98/399,047.99 - Step 6: Final answer
x = 300,531.28
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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.