Finding the Fourth Proportional to 316,639.68, 436,959.47 and 171,442.96
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Solution
The fourth proportional to 316,639.68, 436,959.47 and 171,442.96 is: 236,589.50
Step by Step Solution
- Step 1: Write the proportion equation
316,639.68 : 436,959.47 = 171,442.96 : x - Step 2: Convert to fraction form
316,639.68/436,959.47 = 171,442.96/x - Step 3: Cross multiply
316,639.68x = 436,959.47 × 171,442.96 - Step 4: Simplify right side
316,639.68x = 74,913,624,936.83 - Step 5: Solve for x
x = 74,913,624,936.83/316,639.68 - Step 6: Final answer
x = 236,589.50
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1.5x scale
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.