Finding the Fourth Proportional to 378,511.08, 522,356.95 and 217,398.43
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Solution
The fourth proportional to 378,511.08, 522,356.95 and 217,398.43 is: 300,016.53
Step by Step Solution
- Step 1: Write the proportion equation
378,511.08 : 522,356.95 = 217,398.43 : x - Step 2: Convert to fraction form
378,511.08/522,356.95 = 217,398.43/x - Step 3: Cross multiply
378,511.08x = 522,356.95 × 217,398.43 - Step 4: Simplify right side
378,511.08x = 113,559,580,829.59 - Step 5: Solve for x
x = 113,559,580,829.59/378,511.08 - Step 6: Final answer
x = 300,016.53
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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.