Finding the Fourth Proportional to 306,918.09, 423,449.51 and 172,756.17
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Solution
The fourth proportional to 306,918.09, 423,449.51 and 172,756.17 is: 238,348.66
Step by Step Solution
- Step 1: Write the proportion equation
306,918.09 : 423,449.51 = 172,756.17 : x - Step 2: Convert to fraction form
306,918.09/423,449.51 = 172,756.17/x - Step 3: Cross multiply
306,918.09x = 423,449.51 × 172,756.17 - Step 4: Simplify right side
306,918.09x = 73,153,514,672.20 - Step 5: Solve for x
x = 73,153,514,672.20/306,918.09 - Step 6: Final answer
x = 238,348.66
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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.