Finding the Fourth Proportional to 386,644.72, 579,973.64 and 106,160.08
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Solution
The fourth proportional to 386,644.72, 579,973.64 and 106,160.08 is: 159,241.92
Step by Step Solution
- Step 1: Write the proportion equation
386,644.72 : 579,973.64 = 106,160.08 : x - Step 2: Convert to fraction form
386,644.72/579,973.64 = 106,160.08/x - Step 3: Cross multiply
386,644.72x = 579,973.64 × 106,160.08 - Step 4: Simplify right side
386,644.72x = 61,570,048,020.29 - Step 5: Solve for x
x = 61,570,048,020.29/386,644.72 - Step 6: Final answer
x = 159,241.92
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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.