Finding the Fourth Proportional to 316,971.20, 475,456.80 and 106,587.20
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Solution
The fourth proportional to 316,971.20, 475,456.80 and 106,587.20 is: 159,880.80
Step by Step Solution
- Step 1: Write the proportion equation
316,971.20 : 475,456.80 = 106,587.20 : x - Step 2: Convert to fraction form
316,971.20/475,456.80 = 106,587.20/x - Step 3: Cross multiply
316,971.20x = 475,456.80 × 106,587.20 - Step 4: Simplify right side
316,971.20x = 50,677,609,032.96 - Step 5: Solve for x
x = 50,677,609,032.96/316,971.20 - Step 6: Final answer
x = 159,880.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.