Finding the Fourth Proportional to 312,022.70, 437,937.70 and 312,022.70
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Solution
The fourth proportional to 312,022.70, 437,937.70 and 312,022.70 is: 437,937.70
Step by Step Solution
- Step 1: Write the proportion equation
312,022.70 : 437,937.70 = 312,022.70 : x - Step 2: Convert to fraction form
312,022.70/437,937.70 = 312,022.70/x - Step 3: Cross multiply
312,022.70x = 437,937.70 × 312,022.70 - Step 4: Simplify right side
312,022.70x = 136,646,503,585.79 - Step 5: Solve for x
x = 136,646,503,585.79/312,022.70 - Step 6: Final answer
x = 437,937.70
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1.5x scale
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.