Finding the Fourth Proportional to 257,509.96, 355,357.36 and 142,789.08
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Solution
The fourth proportional to 257,509.96, 355,357.36 and 142,789.08 is: 197,045.39
Step by Step Solution
- Step 1: Write the proportion equation
257,509.96 : 355,357.36 = 142,789.08 : x - Step 2: Convert to fraction form
257,509.96/355,357.36 = 142,789.08/x - Step 3: Cross multiply
257,509.96x = 355,357.36 × 142,789.08 - Step 4: Simplify right side
257,509.96x = 50,741,150,505.63 - Step 5: Solve for x
x = 50,741,150,505.63/257,509.96 - Step 6: Final answer
x = 197,045.39
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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.