Finding the Fourth Proportional to 310,497.60, 428,649.84 and 209,056.44
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Solution
The fourth proportional to 310,497.60, 428,649.84 and 209,056.44 is: 288,607.74
Step by Step Solution
- Step 1: Write the proportion equation
310,497.60 : 428,649.84 = 209,056.44 : x - Step 2: Convert to fraction form
310,497.60/428,649.84 = 209,056.44/x - Step 3: Cross multiply
310,497.60x = 428,649.84 × 209,056.44 - Step 4: Simplify right side
310,497.60x = 89,612,009,556.97 - Step 5: Solve for x
x = 89,612,009,556.97/310,497.60 - Step 6: Final answer
x = 288,607.74
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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.