Finding the Fourth Proportional to 326,817.80, 490,226.70 and 105,201.80
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Solution
The fourth proportional to 326,817.80, 490,226.70 and 105,201.80 is: 157,802.70
Step by Step Solution
- Step 1: Write the proportion equation
326,817.80 : 490,226.70 = 105,201.80 : x - Step 2: Convert to fraction form
326,817.80/490,226.70 = 105,201.80/x - Step 3: Cross multiply
326,817.80x = 490,226.70 × 105,201.80 - Step 4: Simplify right side
326,817.80x = 51,572,731,248.06 - Step 5: Solve for x
x = 51,572,731,248.06/326,817.80 - Step 6: Final answer
x = 157,802.70
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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.