Finding the Fourth Proportional to 208,807.80, 313,211.70 and 155,663.70
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Solution
The fourth proportional to 208,807.80, 313,211.70 and 155,663.70 is: 233,495.55
Step by Step Solution
- Step 1: Write the proportion equation
208,807.80 : 313,211.70 = 155,663.70 : x - Step 2: Convert to fraction form
208,807.80/313,211.70 = 155,663.70/x - Step 3: Cross multiply
208,807.80x = 313,211.70 × 155,663.70 - Step 4: Simplify right side
208,807.80x = 48,755,692,105.29 - Step 5: Solve for x
x = 48,755,692,105.29/208,807.80 - Step 6: Final answer
x = 233,495.55
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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.