Finding the Fourth Proportional to 389,810.75, 537,903.18 and 228,636.14
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Solution
The fourth proportional to 389,810.75, 537,903.18 and 228,636.14 is: 315,496.96
Step by Step Solution
- Step 1: Write the proportion equation
389,810.75 : 537,903.18 = 228,636.14 : x - Step 2: Convert to fraction form
389,810.75/537,903.18 = 228,636.14/x - Step 3: Cross multiply
389,810.75x = 537,903.18 × 228,636.14 - Step 4: Simplify right side
389,810.75x = 122,984,104,079.41 - Step 5: Solve for x
x = 122,984,104,079.41/389,810.75 - Step 6: Final answer
x = 315,496.96
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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.