Finding the Fourth Proportional to 257,000.04, 354,660.53 and 142,286.63
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Solution
The fourth proportional to 257,000.04, 354,660.53 and 142,286.63 is: 196,355.80
Step by Step Solution
- Step 1: Write the proportion equation
257,000.04 : 354,660.53 = 142,286.63 : x - Step 2: Convert to fraction form
257,000.04/354,660.53 = 142,286.63/x - Step 3: Cross multiply
257,000.04x = 354,660.53 × 142,286.63 - Step 4: Simplify right side
257,000.04x = 50,463,449,122.98 - Step 5: Solve for x
x = 50,463,449,122.98/257,000.04 - Step 6: Final answer
x = 196,355.80
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1.5x scale
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.