Finding the Fourth Proportional to 389,591.80, 584,387.70 and 249,623.80
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Solution
The fourth proportional to 389,591.80, 584,387.70 and 249,623.80 is: 374,435.70
Step by Step Solution
- Step 1: Write the proportion equation
389,591.80 : 584,387.70 = 249,623.80 : x - Step 2: Convert to fraction form
389,591.80/584,387.70 = 249,623.80/x - Step 3: Cross multiply
389,591.80x = 584,387.70 × 249,623.80 - Step 4: Simplify right side
389,591.80x = 145,877,078,347.26 - Step 5: Solve for x
x = 145,877,078,347.26/389,591.80 - Step 6: Final answer
x = 374,435.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.