Finding the Fourth Proportional to 399,868.96, 551,819.20 and 218,581.62
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Solution
The fourth proportional to 399,868.96, 551,819.20 and 218,581.62 is: 301,642.65
Step by Step Solution
- Step 1: Write the proportion equation
399,868.96 : 551,819.20 = 218,581.62 : x - Step 2: Convert to fraction form
399,868.96/551,819.20 = 218,581.62/x - Step 3: Cross multiply
399,868.96x = 551,819.20 × 218,581.62 - Step 4: Simplify right side
399,868.96x = 120,617,534,683.10 - Step 5: Solve for x
x = 120,617,534,683.10/399,868.96 - Step 6: Final answer
x = 301,642.65
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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.