Finding the Fourth Proportional to 230,302.49, 317,840.81 and 128,344.55
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Solution
The fourth proportional to 230,302.49, 317,840.81 and 128,344.55 is: 177,128.50
Step by Step Solution
- Step 1: Write the proportion equation
230,302.49 : 317,840.81 = 128,344.55 : x - Step 2: Convert to fraction form
230,302.49/317,840.81 = 128,344.55/x - Step 3: Cross multiply
230,302.49x = 317,840.81 × 128,344.55 - Step 4: Simplify right side
230,302.49x = 40,793,133,500.16 - Step 5: Solve for x
x = 40,793,133,500.16/230,302.49 - Step 6: Final answer
x = 177,128.50
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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.