Finding the Fourth Proportional to 378,323.42, 522,089.80 and 208,563.62
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Solution
The fourth proportional to 378,323.42, 522,089.80 and 208,563.62 is: 287,819.71
Step by Step Solution
- Step 1: Write the proportion equation
378,323.42 : 522,089.80 = 208,563.62 : x - Step 2: Convert to fraction form
378,323.42/522,089.80 = 208,563.62/x - Step 3: Cross multiply
378,323.42x = 522,089.80 × 208,563.62 - Step 4: Simplify right side
378,323.42x = 108,888,938,653.08 - Step 5: Solve for x
x = 108,888,938,653.08/378,323.42 - Step 6: Final answer
x = 287,819.71
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1.5x scale
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.