Finding the Fourth Proportional to 400,991.09, 553,346.52 and 228,902.21
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Solution
The fourth proportional to 400,991.09, 553,346.52 and 228,902.21 is: 315,872.95
Step by Step Solution
- Step 1: Write the proportion equation
400,991.09 : 553,346.52 = 228,902.21 : x - Step 2: Convert to fraction form
400,991.09/553,346.52 = 228,902.21/x - Step 3: Cross multiply
400,991.09x = 553,346.52 × 228,902.21 - Step 4: Simplify right side
400,991.09x = 126,662,238,557.08 - Step 5: Solve for x
x = 126,662,238,557.08/400,991.09 - Step 6: Final answer
x = 315,872.95
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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.