Finding the Fourth Proportional to 278,722.96, 384,644.84 and 151,405.84
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Solution
The fourth proportional to 278,722.96, 384,644.84 and 151,405.84 is: 208,943.95
Step by Step Solution
- Step 1: Write the proportion equation
278,722.96 : 384,644.84 = 151,405.84 : x - Step 2: Convert to fraction form
278,722.96/384,644.84 = 151,405.84/x - Step 3: Cross multiply
278,722.96x = 384,644.84 × 151,405.84 - Step 4: Simplify right side
278,722.96x = 58,237,475,101.87 - Step 5: Solve for x
x = 58,237,475,101.87/278,722.96 - Step 6: Final answer
x = 208,943.95
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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.