Finding the Fourth Proportional to 258,373.10, 387,534.58 and 78,460.07
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Solution
The fourth proportional to 258,373.10, 387,534.58 and 78,460.07 is: 117,682.49
Step by Step Solution
- Step 1: Write the proportion equation
258,373.10 : 387,534.58 = 78,460.07 : x - Step 2: Convert to fraction form
258,373.10/387,534.58 = 78,460.07/x - Step 3: Cross multiply
258,373.10x = 387,534.58 × 78,460.07 - Step 4: Simplify right side
258,373.10x = 30,405,989,881.92 - Step 5: Solve for x
x = 30,405,989,881.92/258,373.10 - Step 6: Final answer
x = 117,682.49
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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.