Finding the Fourth Proportional to 399,564.43, 551,415.74 and 229,798.75
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Solution
The fourth proportional to 399,564.43, 551,415.74 and 229,798.75 is: 317,131.95
Step by Step Solution
- Step 1: Write the proportion equation
399,564.43 : 551,415.74 = 229,798.75 : x - Step 2: Convert to fraction form
399,564.43/551,415.74 = 229,798.75/x - Step 3: Cross multiply
399,564.43x = 551,415.74 × 229,798.75 - Step 4: Simplify right side
399,564.43x = 126,714,647,782.33 - Step 5: Solve for x
x = 126,714,647,782.33/399,564.43 - Step 6: Final answer
x = 317,131.95
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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.