Finding the Fourth Proportional to 389,688.26, 537,616.80 and 226,316.97
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Solution
The fourth proportional to 389,688.26, 537,616.80 and 226,316.97 is: 312,228.57
Step by Step Solution
- Step 1: Write the proportion equation
389,688.26 : 537,616.80 = 226,316.97 : x - Step 2: Convert to fraction form
389,688.26/537,616.80 = 226,316.97/x - Step 3: Cross multiply
389,688.26x = 537,616.80 × 226,316.97 - Step 4: Simplify right side
389,688.26x = 121,671,805,197.10 - Step 5: Solve for x
x = 121,671,805,197.10/389,688.26 - Step 6: Final answer
x = 312,228.57
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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.