Finding the Fourth Proportional to 257,499.16, 386,269.74 and 129,349.53
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Solution
The fourth proportional to 257,499.16, 386,269.74 and 129,349.53 is: 194,034.84
Step by Step Solution
- Step 1: Write the proportion equation
257,499.16 : 386,269.74 = 129,349.53 : x - Step 2: Convert to fraction form
257,499.16/386,269.74 = 129,349.53/x - Step 3: Cross multiply
257,499.16x = 386,269.74 × 129,349.53 - Step 4: Simplify right side
257,499.16x = 49,963,809,322.22 - Step 5: Solve for x
x = 49,963,809,322.22/257,499.16 - Step 6: Final answer
x = 194,034.84
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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.