Finding the Fourth Proportional to 405,915.64, 608,693.46 and 216,340.68
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Solution
The fourth proportional to 405,915.64, 608,693.46 and 216,340.68 is: 324,415.09
Step by Step Solution
- Step 1: Write the proportion equation
405,915.64 : 608,693.46 = 216,340.68 : x - Step 2: Convert to fraction form
405,915.64/608,693.46 = 216,340.68/x - Step 3: Cross multiply
405,915.64x = 608,693.46 × 216,340.68 - Step 4: Simplify right side
405,915.64x = 131,685,157,047.95 - Step 5: Solve for x
x = 131,685,157,047.95/405,915.64 - Step 6: Final answer
x = 324,415.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.