Finding the Fourth Proportional to 225,510.21, 311,130.87 and 153,765.68
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Solution
The fourth proportional to 225,510.21, 311,130.87 and 153,765.68 is: 212,146.71
Step by Step Solution
- Step 1: Write the proportion equation
225,510.21 : 311,130.87 = 153,765.68 : x - Step 2: Convert to fraction form
225,510.21/311,130.87 = 153,765.68/x - Step 3: Cross multiply
225,510.21x = 311,130.87 × 153,765.68 - Step 4: Simplify right side
225,510.21x = 47,841,248,527.20 - Step 5: Solve for x
x = 47,841,248,527.20/225,510.21 - Step 6: Final answer
x = 212,146.71
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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.