Finding the Fourth Proportional to 287,660.58, 431,490.50 and 77,298.53
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Solution
The fourth proportional to 287,660.58, 431,490.50 and 77,298.53 is: 115,947.69
Step by Step Solution
- Step 1: Write the proportion equation
287,660.58 : 431,490.50 = 77,298.53 : x - Step 2: Convert to fraction form
287,660.58/431,490.50 = 77,298.53/x - Step 3: Cross multiply
287,660.58x = 431,490.50 × 77,298.53 - Step 4: Simplify right side
287,660.58x = 33,353,578,815.02 - Step 5: Solve for x
x = 33,353,578,815.02/287,660.58 - Step 6: Final answer
x = 115,947.69
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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.