Finding the Fourth Proportional to 399,638.96, 551,495.32 and 218,346.99
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Solution
The fourth proportional to 399,638.96, 551,495.32 and 218,346.99 is: 301,315.33
Step by Step Solution
- Step 1: Write the proportion equation
399,638.96 : 551,495.32 = 218,346.99 : x - Step 2: Convert to fraction form
399,638.96/551,495.32 = 218,346.99/x - Step 3: Cross multiply
399,638.96x = 551,495.32 × 218,346.99 - Step 4: Simplify right side
399,638.96x = 120,417,343,121.09 - Step 5: Solve for x
x = 120,417,343,121.09/399,638.96 - Step 6: Final answer
x = 301,315.33
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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.