Finding the Fourth Proportional to 399,555.72, 551,379.97 and 218,262.99
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Solution
The fourth proportional to 399,555.72, 551,379.97 and 218,262.99 is: 301,199.14
Step by Step Solution
- Step 1: Write the proportion equation
399,555.72 : 551,379.97 = 218,262.99 : x - Step 2: Convert to fraction form
399,555.72/551,379.97 = 218,262.99/x - Step 3: Cross multiply
399,555.72x = 551,379.97 × 218,262.99 - Step 4: Simplify right side
399,555.72x = 120,345,840,878.31 - Step 5: Solve for x
x = 120,345,840,878.31/399,555.72 - Step 6: Final answer
x = 301,199.14
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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.