Finding the Fourth Proportional to 221,313.60, 331,898.16 and 71,518.68
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Solution
The fourth proportional to 221,313.60, 331,898.16 and 71,518.68 is: 107,254.68
Step by Step Solution
- Step 1: Write the proportion equation
221,313.60 : 331,898.16 = 71,518.68 : x - Step 2: Convert to fraction form
221,313.60/331,898.16 = 71,518.68/x - Step 3: Cross multiply
221,313.60x = 331,898.16 × 71,518.68 - Step 4: Simplify right side
221,313.60x = 23,736,918,297.63 - Step 5: Solve for x
x = 23,736,918,297.63/221,313.60 - Step 6: Final answer
x = 107,254.68
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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.