Finding the Fourth Proportional to 389,684.63, 537,707.13 and 236,643.23
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Solution
The fourth proportional to 389,684.63, 537,707.13 and 236,643.23 is: 326,532.64
Step by Step Solution
- Step 1: Write the proportion equation
389,684.63 : 537,707.13 = 236,643.23 : x - Step 2: Convert to fraction form
389,684.63/537,707.13 = 236,643.23/x - Step 3: Cross multiply
389,684.63x = 537,707.13 × 236,643.23 - Step 4: Simplify right side
389,684.63x = 127,244,752,037.23 - Step 5: Solve for x
x = 127,244,752,037.23/389,684.63 - Step 6: Final answer
x = 326,532.64
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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.