Finding the Fourth Proportional to 230,302.20, 317,811.18 and 128,328.12
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Solution
The fourth proportional to 230,302.20, 317,811.18 and 128,328.12 is: 177,089.54
Step by Step Solution
- Step 1: Write the proportion equation
230,302.20 : 317,811.18 = 128,328.12 : x - Step 2: Convert to fraction form
230,302.20/317,811.18 = 128,328.12/x - Step 3: Cross multiply
230,302.20x = 317,811.18 × 128,328.12 - Step 4: Simplify right side
230,302.20x = 40,784,111,244.38 - Step 5: Solve for x
x = 40,784,111,244.38/230,302.20 - Step 6: Final answer
x = 177,089.54
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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.