Finding the Fourth Proportional to 321,774.19, 442,473.74 and 279,258.91
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Solution
The fourth proportional to 321,774.19, 442,473.74 and 279,258.91 is: 384,010.71
Step by Step Solution
- Step 1: Write the proportion equation
321,774.19 : 442,473.74 = 279,258.91 : x - Step 2: Convert to fraction form
321,774.19/442,473.74 = 279,258.91/x - Step 3: Cross multiply
321,774.19x = 442,473.74 × 279,258.91 - Step 4: Simplify right side
321,774.19x = 123,564,732,880.77 - Step 5: Solve for x
x = 123,564,732,880.77/321,774.19 - Step 6: Final answer
x = 384,010.71
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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.