Finding the Fourth Proportional to 278,644.18, 384,646.68 and 188,122.76
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Solution
The fourth proportional to 278,644.18, 384,646.68 and 188,122.76 is: 259,688.88
Step by Step Solution
- Step 1: Write the proportion equation
278,644.18 : 384,646.68 = 188,122.76 : x - Step 2: Convert to fraction form
278,644.18/384,646.68 = 188,122.76/x - Step 3: Cross multiply
278,644.18x = 384,646.68 × 188,122.76 - Step 4: Simplify right side
278,644.18x = 72,360,795,066.44 - Step 5: Solve for x
x = 72,360,795,066.44/278,644.18 - Step 6: Final answer
x = 259,688.88
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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.