Finding the Fourth Proportional to 291,959.40, 437,939.10 and 104,989.80
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Solution
The fourth proportional to 291,959.40, 437,939.10 and 104,989.80 is: 157,484.70
Step by Step Solution
- Step 1: Write the proportion equation
291,959.40 : 437,939.10 = 104,989.80 : x - Step 2: Convert to fraction form
291,959.40/437,939.10 = 104,989.80/x - Step 3: Cross multiply
291,959.40x = 437,939.10 × 104,989.80 - Step 4: Simplify right side
291,959.40x = 45,979,138,521.18 - Step 5: Solve for x
x = 45,979,138,521.18/291,959.40 - Step 6: Final answer
x = 157,484.70
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1.5x scale
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.