Finding the Fourth Proportional to 399,220.64, 551,035.68 and 229,509.44
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Solution
The fourth proportional to 399,220.64, 551,035.68 and 229,509.44 is: 316,786.95
Step by Step Solution
- Step 1: Write the proportion equation
399,220.64 : 551,035.68 = 229,509.44 : x - Step 2: Convert to fraction form
399,220.64/551,035.68 = 229,509.44/x - Step 3: Cross multiply
399,220.64x = 551,035.68 × 229,509.44 - Step 4: Simplify right side
399,220.64x = 126,467,890,336.82 - Step 5: Solve for x
x = 126,467,890,336.82/399,220.64 - Step 6: Final answer
x = 316,786.95
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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.