Finding the Fourth Proportional to 280,802.12, 387,501.21 and 153,478.62
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Solution
The fourth proportional to 280,802.12, 387,501.21 and 153,478.62 is: 211,797.38
Step by Step Solution
- Step 1: Write the proportion equation
280,802.12 : 387,501.21 = 153,478.62 : x - Step 2: Convert to fraction form
280,802.12/387,501.21 = 153,478.62/x - Step 3: Cross multiply
280,802.12x = 387,501.21 × 153,478.62 - Step 4: Simplify right side
280,802.12x = 59,473,150,959.13 - Step 5: Solve for x
x = 59,473,150,959.13/280,802.12 - Step 6: Final answer
x = 211,797.38
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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.