Finding the Fourth Proportional to 305,415.25, 455,642.99 and 288,881.53
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Solution
The fourth proportional to 305,415.25, 455,642.99 and 288,881.53 is: 430,976.66
Step by Step Solution
- Step 1: Write the proportion equation
305,415.25 : 455,642.99 = 288,881.53 : x - Step 2: Convert to fraction form
305,415.25/455,642.99 = 288,881.53/x - Step 3: Cross multiply
305,415.25x = 455,642.99 × 288,881.53 - Step 4: Simplify right side
305,415.25x = 131,626,845,084.98 - Step 5: Solve for x
x = 131,626,845,084.98/305,415.25 - Step 6: Final answer
x = 430,976.66
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.