Finding the Fourth Proportional to 218,613.21, 301,707.75 and 127,963.68
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Solution
The fourth proportional to 218,613.21, 301,707.75 and 127,963.68 is: 176,602.47
Step by Step Solution
- Step 1: Write the proportion equation
218,613.21 : 301,707.75 = 127,963.68 : x - Step 2: Convert to fraction form
218,613.21/301,707.75 = 127,963.68/x - Step 3: Cross multiply
218,613.21x = 301,707.75 × 127,963.68 - Step 4: Simplify right side
218,613.21x = 38,607,633,334.70 - Step 5: Solve for x
x = 38,607,633,334.70/218,613.21 - Step 6: Final answer
x = 176,602.47
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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.