Finding the Fourth Proportional to 257,141.80, 385,738.06 and 88,639.94
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Solution
The fourth proportional to 257,141.80, 385,738.06 and 88,639.94 is: 132,968.65
Step by Step Solution
- Step 1: Write the proportion equation
257,141.80 : 385,738.06 = 88,639.94 : x - Step 2: Convert to fraction form
257,141.80/385,738.06 = 88,639.94/x - Step 3: Cross multiply
257,141.80x = 385,738.06 × 88,639.94 - Step 4: Simplify right side
257,141.80x = 34,191,798,494.12 - Step 5: Solve for x
x = 34,191,798,494.12/257,141.80 - Step 6: Final answer
x = 132,968.65
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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.