Finding the Fourth Proportional to 310,720.25, 428,852.84 and 194,487.63
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Solution
The fourth proportional to 310,720.25, 428,852.84 and 194,487.63 is: 268,429.79
Step by Step Solution
- Step 1: Write the proportion equation
310,720.25 : 428,852.84 = 194,487.63 : x - Step 2: Convert to fraction form
310,720.25/428,852.84 = 194,487.63/x - Step 3: Cross multiply
310,720.25x = 428,852.84 × 194,487.63 - Step 4: Simplify right side
310,720.25x = 83,406,571,497.93 - Step 5: Solve for x
x = 83,406,571,497.93/310,720.25 - Step 6: Final answer
x = 268,429.79
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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.