Finding the Fourth Proportional to 258,342.60, 387,524.70 and 138,349.20
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Solution
The fourth proportional to 258,342.60, 387,524.70 and 138,349.20 is: 207,529.58
Step by Step Solution
- Step 1: Write the proportion equation
258,342.60 : 387,524.70 = 138,349.20 : x - Step 2: Convert to fraction form
258,342.60/387,524.70 = 138,349.20/x - Step 3: Cross multiply
258,342.60x = 387,524.70 × 138,349.20 - Step 4: Simplify right side
258,342.60x = 53,613,732,225.24 - Step 5: Solve for x
x = 53,613,732,225.24/258,342.60 - Step 6: Final answer
x = 207,529.58
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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.