Finding the Fourth Proportional to 280,394.63, 386,946.21 and 153,071.54
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Solution
The fourth proportional to 280,394.63, 386,946.21 and 153,071.54 is: 211,239.61
Step by Step Solution
- Step 1: Write the proportion equation
280,394.63 : 386,946.21 = 153,071.54 : x - Step 2: Convert to fraction form
280,394.63/386,946.21 = 153,071.54/x - Step 3: Cross multiply
280,394.63x = 386,946.21 × 153,071.54 - Step 4: Simplify right side
280,394.63x = 59,230,450,327.13 - Step 5: Solve for x
x = 59,230,450,327.13/280,394.63 - Step 6: Final answer
x = 211,239.61
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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.