Finding the Fourth Proportional to 291,207.09, 401,799.28 and 163,836.21
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Solution
The fourth proportional to 291,207.09, 401,799.28 and 163,836.21 is: 226,056.55
Step by Step Solution
- Step 1: Write the proportion equation
291,207.09 : 401,799.28 = 163,836.21 : x - Step 2: Convert to fraction form
291,207.09/401,799.28 = 163,836.21/x - Step 3: Cross multiply
291,207.09x = 401,799.28 × 163,836.21 - Step 4: Simplify right side
291,207.09x = 65,829,271,215.93 - Step 5: Solve for x
x = 65,829,271,215.93/291,207.09 - Step 6: Final answer
x = 226,056.55
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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.