Finding the Fourth Proportional to 280,403.57, 386,979.02 and 159,549.95
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Solution
The fourth proportional to 280,403.57, 386,979.02 and 159,549.95 is: 220,191.50
Step by Step Solution
- Step 1: Write the proportion equation
280,403.57 : 386,979.02 = 159,549.95 : x - Step 2: Convert to fraction form
280,403.57/386,979.02 = 159,549.95/x - Step 3: Cross multiply
280,403.57x = 386,979.02 × 159,549.95 - Step 4: Simplify right side
280,403.57x = 61,742,484,060.06 - Step 5: Solve for x
x = 61,742,484,060.06/280,403.57 - Step 6: Final answer
x = 220,191.50
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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.