Finding the Fourth Proportional to 399,368.25, 551,129.13 and 218,080.53
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Solution
The fourth proportional to 399,368.25, 551,129.13 and 218,080.53 is: 300,951.65
Step by Step Solution
- Step 1: Write the proportion equation
399,368.25 : 551,129.13 = 218,080.53 : x - Step 2: Convert to fraction form
399,368.25/551,129.13 = 218,080.53/x - Step 3: Cross multiply
399,368.25x = 551,129.13 × 218,080.53 - Step 4: Simplify right side
399,368.25x = 120,190,532,768.84 - Step 5: Solve for x
x = 120,190,532,768.84/399,368.25 - Step 6: Final answer
x = 300,951.65
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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.