Finding the Fourth Proportional to 287,488.89, 396,737.28 and 158,431.99
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Solution
The fourth proportional to 287,488.89, 396,737.28 and 158,431.99 is: 218,637.59
Step by Step Solution
- Step 1: Write the proportion equation
287,488.89 : 396,737.28 = 158,431.99 : x - Step 2: Convert to fraction form
287,488.89/396,737.28 = 158,431.99/x - Step 3: Cross multiply
287,488.89x = 396,737.28 × 158,431.99 - Step 4: Simplify right side
287,488.89x = 62,855,876,777.59 - Step 5: Solve for x
x = 62,855,876,777.59/287,488.89 - Step 6: Final answer
x = 218,637.59
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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.