Finding the Fourth Proportional to 230,405.18, 317,960.60 and 128,437.12
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Solution
The fourth proportional to 230,405.18, 317,960.60 and 128,437.12 is: 177,244.03
Step by Step Solution
- Step 1: Write the proportion equation
230,405.18 : 317,960.60 = 128,437.12 : x - Step 2: Convert to fraction form
230,405.18/317,960.60 = 128,437.12/x - Step 3: Cross multiply
230,405.18x = 317,960.60 × 128,437.12 - Step 4: Simplify right side
230,405.18x = 40,837,943,737.47 - Step 5: Solve for x
x = 40,837,943,737.47/230,405.18 - Step 6: Final answer
x = 177,244.03
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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.