Finding the Fourth Proportional to 660,343.70, 990,515.55 and 161,707.70
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Solution
The fourth proportional to 660,343.70, 990,515.55 and 161,707.70 is: 242,561.55
Step by Step Solution
- Step 1: Write the proportion equation
660,343.70 : 990,515.55 = 161,707.70 : x - Step 2: Convert to fraction form
660,343.70/990,515.55 = 161,707.70/x - Step 3: Cross multiply
660,343.70x = 990,515.55 × 161,707.70 - Step 4: Simplify right side
660,343.70x = 160,173,991,404.74 - Step 5: Solve for x
x = 160,173,991,404.74/660,343.70 - Step 6: Final answer
x = 242,561.55
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.