Finding the Fourth Proportional to 442,905.40, 664,358.10 and 127,343.80
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Solution
The fourth proportional to 442,905.40, 664,358.10 and 127,343.80 is: 191,015.70
Step by Step Solution
- Step 1: Write the proportion equation
442,905.40 : 664,358.10 = 127,343.80 : x - Step 2: Convert to fraction form
442,905.40/664,358.10 = 127,343.80/x - Step 3: Cross multiply
442,905.40x = 664,358.10 × 127,343.80 - Step 4: Simplify right side
442,905.40x = 84,601,885,014.78 - Step 5: Solve for x
x = 84,601,885,014.78/442,905.40 - Step 6: Final answer
x = 191,015.70
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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.