Finding the Fourth Proportional to 395,117.29, 545,203.16 and 239,987.84
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Solution
The fourth proportional to 395,117.29, 545,203.16 and 239,987.84 is: 331,147.57
Step by Step Solution
- Step 1: Write the proportion equation
395,117.29 : 545,203.16 = 239,987.84 : x - Step 2: Convert to fraction form
395,117.29/545,203.16 = 239,987.84/x - Step 3: Cross multiply
395,117.29x = 545,203.16 × 239,987.84 - Step 4: Simplify right side
395,117.29x = 130,842,128,729.57 - Step 5: Solve for x
x = 130,842,128,729.57/395,117.29 - Step 6: Final answer
x = 331,147.57
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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.