Finding the Fourth Proportional to 291,644.40, 437,226.60 and 131,730.80
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Solution
The fourth proportional to 291,644.40, 437,226.60 and 131,730.80 is: 197,487.80
Step by Step Solution
- Step 1: Write the proportion equation
291,644.40 : 437,226.60 = 131,730.80 : x - Step 2: Convert to fraction form
291,644.40/437,226.60 = 131,730.80/x - Step 3: Cross multiply
291,644.40x = 437,226.60 × 131,730.80 - Step 4: Simplify right side
291,644.40x = 57,596,209,799.28 - Step 5: Solve for x
x = 57,596,209,799.28/291,644.40 - Step 6: Final answer
x = 197,487.80
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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.