Finding the Fourth Proportional to 212,417.37, 292,986.68 and 139,797.14
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Solution
The fourth proportional to 212,417.37, 292,986.68 and 139,797.14 is: 192,821.79
Step by Step Solution
- Step 1: Write the proportion equation
212,417.37 : 292,986.68 = 139,797.14 : x - Step 2: Convert to fraction form
212,417.37/292,986.68 = 139,797.14/x - Step 3: Cross multiply
212,417.37x = 292,986.68 × 139,797.14 - Step 4: Simplify right side
212,417.37x = 40,958,697,758.18 - Step 5: Solve for x
x = 40,958,697,758.18/212,417.37 - Step 6: Final answer
x = 192,821.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.