Finding the Fourth Proportional to 286,805.84, 395,775.80 and 159,478.70
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Solution
The fourth proportional to 286,805.84, 395,775.80 and 159,478.70 is: 220,071.57
Step by Step Solution
- Step 1: Write the proportion equation
286,805.84 : 395,775.80 = 159,478.70 : x - Step 2: Convert to fraction form
286,805.84/395,775.80 = 159,478.70/x - Step 3: Cross multiply
286,805.84x = 395,775.80 × 159,478.70 - Step 4: Simplify right side
286,805.84x = 63,117,810,474.16 - Step 5: Solve for x
x = 63,117,810,474.16/286,805.84 - Step 6: Final answer
x = 220,071.57
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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.