Finding the Fourth Proportional to 310,071.53, 427,965.36 and 189,186.86
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Solution
The fourth proportional to 310,071.53, 427,965.36 and 189,186.86 is: 261,118.53
Step by Step Solution
- Step 1: Write the proportion equation
310,071.53 : 427,965.36 = 189,186.86 : x - Step 2: Convert to fraction form
310,071.53/427,965.36 = 189,186.86/x - Step 3: Cross multiply
310,071.53x = 427,965.36 × 189,186.86 - Step 4: Simplify right side
310,071.53x = 80,965,423,007.63 - Step 5: Solve for x
x = 80,965,423,007.63/310,071.53 - Step 6: Final answer
x = 261,118.53
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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.