Finding the Fourth Proportional to 479,721.42, 661,998.12 and 261,926.08
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Solution
The fourth proportional to 479,721.42, 661,998.12 and 261,926.08 is: 361,448.47
Step by Step Solution
- Step 1: Write the proportion equation
479,721.42 : 661,998.12 = 261,926.08 : x - Step 2: Convert to fraction form
479,721.42/661,998.12 = 261,926.08/x - Step 3: Cross multiply
479,721.42x = 661,998.12 × 261,926.08 - Step 4: Simplify right side
479,721.42x = 173,394,572,538.97 - Step 5: Solve for x
x = 173,394,572,538.97/479,721.42 - Step 6: Final answer
x = 361,448.47
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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.