Finding the Fourth Proportional to 287,726.06, 431,855.26 and 145,671.14
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Solution
The fourth proportional to 287,726.06, 431,855.26 and 145,671.14 is: 218,641.47
Step by Step Solution
- Step 1: Write the proportion equation
287,726.06 : 431,855.26 = 145,671.14 : x - Step 2: Convert to fraction form
287,726.06/431,855.26 = 145,671.14/x - Step 3: Cross multiply
287,726.06x = 431,855.26 × 145,671.14 - Step 4: Simplify right side
287,726.06x = 62,908,848,039.20 - Step 5: Solve for x
x = 62,908,848,039.20/287,726.06 - Step 6: Final answer
x = 218,641.47
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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.