Finding the Fourth Proportional to 257,629.80, 386,444.70 and 68,089.80
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Solution
The fourth proportional to 257,629.80, 386,444.70 and 68,089.80 is: 102,134.70
Step by Step Solution
- Step 1: Write the proportion equation
257,629.80 : 386,444.70 = 68,089.80 : x - Step 2: Convert to fraction form
257,629.80/386,444.70 = 68,089.80/x - Step 3: Cross multiply
257,629.80x = 386,444.70 × 68,089.80 - Step 4: Simplify right side
257,629.80x = 26,312,942,334.06 - Step 5: Solve for x
x = 26,312,942,334.06/257,629.80 - Step 6: Final answer
x = 102,134.70
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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.