Finding the Fourth Proportional to 306,117.70, 428,914.70 and 306,117.70
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Solution
The fourth proportional to 306,117.70, 428,914.70 and 306,117.70 is: 428,914.70
Step by Step Solution
- Step 1: Write the proportion equation
306,117.70 : 428,914.70 = 306,117.70 : x - Step 2: Convert to fraction form
306,117.70/428,914.70 = 306,117.70/x - Step 3: Cross multiply
306,117.70x = 428,914.70 × 306,117.70 - Step 4: Simplify right side
306,117.70x = 131,298,381,460.19 - Step 5: Solve for x
x = 131,298,381,460.19/306,117.70 - Step 6: Final answer
x = 428,914.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.