Finding the Fourth Proportional to 230,425.74, 317,988.84 and 128,457.66
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Solution
The fourth proportional to 230,425.74, 317,988.84 and 128,457.66 is: 177,272.31
Step by Step Solution
- Step 1: Write the proportion equation
230,425.74 : 317,988.84 = 128,457.66 : x - Step 2: Convert to fraction form
230,425.74/317,988.84 = 128,457.66/x - Step 3: Cross multiply
230,425.74x = 317,988.84 × 128,457.66 - Step 4: Simplify right side
230,425.74x = 40,848,102,292.51 - Step 5: Solve for x
x = 40,848,102,292.51/230,425.74 - Step 6: Final answer
x = 177,272.31
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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.