Finding the Fourth Proportional to 399,707.68, 551,589.96 and 218,415.74
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Solution
The fourth proportional to 399,707.68, 551,589.96 and 218,415.74 is: 301,410.09
Step by Step Solution
- Step 1: Write the proportion equation
399,707.68 : 551,589.96 = 218,415.74 : x - Step 2: Convert to fraction form
399,707.68/551,589.96 = 218,415.74/x - Step 3: Cross multiply
399,707.68x = 551,589.96 × 218,415.74 - Step 4: Simplify right side
399,707.68x = 120,475,929,289.97 - Step 5: Solve for x
x = 120,475,929,289.97/399,707.68 - Step 6: Final answer
x = 301,410.09
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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.