Finding the Fourth Proportional to 399,417.23, 551,192.99 and 218,129.22
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Solution
The fourth proportional to 399,417.23, 551,192.99 and 218,129.22 is: 301,016.80
Step by Step Solution
- Step 1: Write the proportion equation
399,417.23 : 551,192.99 = 218,129.22 : x - Step 2: Convert to fraction form
399,417.23/551,192.99 = 218,129.22/x - Step 3: Cross multiply
399,417.23x = 551,192.99 × 218,129.22 - Step 4: Simplify right side
399,417.23x = 120,231,295,887.52 - Step 5: Solve for x
x = 120,231,295,887.52/399,417.23 - Step 6: Final answer
x = 301,016.80
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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.