Finding the Fourth Proportional to 316,557.78, 474,861.26 and 91,921.92
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Solution
The fourth proportional to 316,557.78, 474,861.26 and 91,921.92 is: 137,890.02
Step by Step Solution
- Step 1: Write the proportion equation
316,557.78 : 474,861.26 = 91,921.92 : x - Step 2: Convert to fraction form
316,557.78/474,861.26 = 91,921.92/x - Step 3: Cross multiply
316,557.78x = 474,861.26 × 91,921.92 - Step 4: Simplify right side
316,557.78x = 43,650,158,752.82 - Step 5: Solve for x
x = 43,650,158,752.82/316,557.78 - Step 6: Final answer
x = 137,890.02
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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.