Finding the Fourth Proportional to 257,836.66, 355,809.08 and 143,108.62
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Solution
The fourth proportional to 257,836.66, 355,809.08 and 143,108.62 is: 197,486.83
Step by Step Solution
- Step 1: Write the proportion equation
257,836.66 : 355,809.08 = 143,108.62 : x - Step 2: Convert to fraction form
257,836.66/355,809.08 = 143,108.62/x - Step 3: Cross multiply
257,836.66x = 355,809.08 × 143,108.62 - Step 4: Simplify right side
257,836.66x = 50,919,344,817.20 - Step 5: Solve for x
x = 50,919,344,817.20/257,836.66 - Step 6: Final answer
x = 197,486.83
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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.