Finding the Fourth Proportional to 378,726.42, 522,668.07 and 217,645.68
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Solution
The fourth proportional to 378,726.42, 522,668.07 and 217,645.68 is: 300,365.76
Step by Step Solution
- Step 1: Write the proportion equation
378,726.42 : 522,668.07 = 217,645.68 : x - Step 2: Convert to fraction form
378,726.42/522,668.07 = 217,645.68/x - Step 3: Cross multiply
378,726.42x = 522,668.07 × 217,645.68 - Step 4: Simplify right side
378,726.42x = 113,756,447,509.44 - Step 5: Solve for x
x = 113,756,447,509.44/378,726.42 - Step 6: Final answer
x = 300,365.76
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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.