Finding the Fourth Proportional to 257,862.10, 386,795.80 and 77,949.00
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Solution
The fourth proportional to 257,862.10, 386,795.80 and 77,949.00 is: 116,924.30
Step by Step Solution
- Step 1: Write the proportion equation
257,862.10 : 386,795.80 = 77,949.00 : x - Step 2: Convert to fraction form
257,862.10/386,795.80 = 77,949.00/x - Step 3: Cross multiply
257,862.10x = 386,795.80 × 77,949.00 - Step 4: Simplify right side
257,862.10x = 30,150,343,880.22 - Step 5: Solve for x
x = 30,150,343,880.22/257,862.10 - Step 6: Final answer
x = 116,924.30
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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.