Finding the Fourth Proportional to 311,510.18, 429,883.79 and 168,270.18
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Solution
The fourth proportional to 311,510.18, 429,883.79 and 168,270.18 is: 232,212.71
Step by Step Solution
- Step 1: Write the proportion equation
311,510.18 : 429,883.79 = 168,270.18 : x - Step 2: Convert to fraction form
311,510.18/429,883.79 = 168,270.18/x - Step 3: Cross multiply
311,510.18x = 429,883.79 × 168,270.18 - Step 4: Simplify right side
311,510.18x = 72,336,621,881.03 - Step 5: Solve for x
x = 72,336,621,881.03/311,510.18 - Step 6: Final answer
x = 232,212.71
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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.